/* =============================================================================
   style.css - corso-ai.devacademy.it
   Landing page Lifetime AI Expert - Stile dark moderno brand devACADEMY
   ============================================================================= */

/* ===== 1. RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { font-family: var(--font-primary); font-size: var(--text-base); line-height: 1.6; color: var(--text-primary); background: var(--bg-base); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; overflow-x: hidden; min-height: 100vh; }
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--primary-light); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--primary-glow); }
::selection { background: var(--primary); color: var(--text-on-primary); }

/* ===== 2. VARIABILI ===== */
:root {
    /* Backgrounds */
    --bg-base: #1a1a1b; --bg-elevated: #222222; --bg-surface: #2a2b2c; --bg-surface-2: #363738;
    /* Primary brand */
    --primary: #d05000; --primary-hover: #b84500; --primary-light: #e17d31; --primary-glow: #ff9550;
    --gradient-primary: linear-gradient(135deg, #d05000 0%, #e17d31 100%);
    --gradient-primary-soft: linear-gradient(135deg, rgba(208, 80, 0, 0.12) 0%, rgba(225, 125, 49, 0.12) 100%);
    /* Text */
    --text-primary: #f5f5f5; --text-secondary: #c7c7c7; --text-muted: #8a8a8a; --text-on-primary: #ffffff;
    /* Stati */
    --success: #5cb85c; --success-bg: rgba(92, 184, 92, 0.12);
    --warning: #e17d31; --warning-bg: rgba(225, 125, 49, 0.15);
    --error: #dc3545; --error-bg: rgba(220, 53, 69, 0.12);
    /* Bordi */
    --border-subtle: rgba(255, 255, 255, 0.06); --border-default: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.15); --border-primary: rgba(208, 80, 0, 0.4);
    /* Shadow */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3); --shadow-md: 0 4px 16px rgba(0,0,0,0.35);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.45); --shadow-xl: 0 16px 48px rgba(0,0,0,0.55);
    --shadow-cta: 0 8px 32px rgba(208,80,0,0.35); --shadow-cta-hover: 0 12px 40px rgba(208,80,0,0.5);
    --glow-text: 0 0 40px rgba(225,125,49,0.2);
    /* Font */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    --text-xs: 0.75rem; --text-sm: 0.875rem; --text-base: 1rem; --text-lg: 1.125rem; --text-xl: 1.25rem;
    --text-2xl: clamp(1.5rem, 4vw, 1.875rem); --text-3xl: clamp(1.875rem, 5vw, 2.25rem);
    --text-4xl: clamp(2.25rem, 6vw, 3rem); --text-5xl: clamp(2.25rem, 6vw, 3.25rem);
    --text-6xl: clamp(2.5rem, 7vw, 3.75rem);
    --weight-normal: 400; --weight-medium: 500; --weight-semibold: 600; --weight-bold: 700; --weight-extrabold: 800;
    /* Spacing */
    --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem; --space-5: 1.25rem;
    --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem; --space-16: 4rem;
    --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;
    /* Radius */
    --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px; --radius-xl: 16px; --radius-2xl: 24px; --radius-full: 9999px;
    /* Transitions */
    --transition-fast: 150ms ease; --transition-base: 250ms ease; --transition-slow: 400ms ease;
    /* z-index */
    --z-sticky: 20; --z-modal-bg: 40; --z-modal: 50;
    /* Container */
    --container-max: 1200px; --container-narrow: 800px; --container-padding: var(--space-4);
}

/* ===== 3. TIPOGRAFIA ===== */
h1, h2, h3, h4, h5, h6 { line-height: 1.2; font-weight: var(--weight-bold); color: var(--text-primary); letter-spacing: -0.02em; }
h1 { font-size: var(--text-5xl); font-weight: var(--weight-extrabold); }
h2 { font-size: var(--text-4xl); font-weight: var(--weight-extrabold); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
p { color: var(--text-secondary); line-height: 1.7; }
strong { color: var(--text-primary); font-weight: var(--weight-semibold); }
.highlight { color: var(--primary-light); font-weight: inherit; }
.lead { font-size: var(--text-lg); color: var(--text-secondary); line-height: 1.6; }

/* ===== 4. LAYOUT ===== */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-padding); }
.container-narrow { width: 100%; max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--container-padding); }
.section { padding: var(--space-16) 0; position: relative; }
.section-alt { background: var(--bg-elevated); }
.section-header { text-align: center; max-width: 700px; margin: 0 auto var(--space-12) auto; }
.section-header h2 { margin-bottom: var(--space-4); }
.text-center { text-align: center; }

/* ===== 5. BOTTONI ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); padding: var(--space-4) var(--space-8); border: none; border-radius: var(--radius-lg); font-family: var(--font-primary); font-size: var(--text-base); font-weight: var(--weight-semibold); text-decoration: none; cursor: pointer; transition: all var(--transition-base); white-space: nowrap; line-height: 1; user-select: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--gradient-primary); color: var(--text-on-primary); box-shadow: var(--shadow-cta); }
.btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: var(--shadow-cta-hover); color: var(--text-on-primary); }
.btn-primary:active:not(:disabled) { transform: translateY(0); }
.btn-cta { padding: var(--space-5) var(--space-10); font-size: var(--text-lg); font-weight: var(--weight-bold); border-radius: var(--radius-xl); letter-spacing: 0.01em; }
.btn-block { display: flex; width: 100%; }
.btn-outline { background: transparent; color: var(--text-primary); border: 1px solid var(--border-default); }
.btn-outline:hover { border-color: var(--primary); background: rgba(208,80,0,0.05); color: var(--text-primary); }
.cta-wrapper { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); }
.cta-microcopy { font-size: var(--text-sm); color: var(--text-muted); text-align: center; }

/* ===== 6. EYEBROW / BADGE ===== */
.eyebrow { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-4); background: var(--gradient-primary-soft); color: var(--primary-light); border: 1px solid var(--border-primary); border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: var(--weight-bold); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: var(--space-6); }

/* ===== 7. HEADER ===== */
.site-header { position: sticky; top: 0; z-index: var(--z-sticky); background: rgba(26,26,27,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-subtle); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-4) 0; position: relative; }
.logo { display: inline-block; height: 48px; flex-shrink: 0; }
.logo img { height: 100%; width: auto; display: block; }
.header-cta { display: none; }

/* Menu di navigazione */
.main-nav { display: none; }
.nav-list { list-style: none; display: flex; align-items: center; gap: var(--space-1); margin: 0; padding: 0; }
.nav-link { display: inline-block; padding: var(--space-2) var(--space-3); color: var(--text-secondary); font-size: var(--text-sm); font-weight: var(--weight-medium); text-decoration: none; transition: all var(--transition-fast); border-radius: var(--radius-md); }
.nav-link:hover { color: var(--primary-light); background: rgba(255,255,255,0.04); }

/* Hamburger menu (mobile) */
.nav-toggle { display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 4px; width: 40px; height: 40px; padding: 0; background: transparent; border: 1px solid var(--border-default); border-radius: var(--radius-md); cursor: pointer; transition: all var(--transition-fast); }
.nav-toggle:hover { border-color: var(--primary); }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all var(--transition-base); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Menu mobile overlay quando aperto */
.main-nav.is-open { display: block; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-elevated); border-bottom: 1px solid var(--border-default); padding: var(--space-3) var(--container-padding); box-shadow: var(--shadow-lg); animation: slideUp 200ms ease; }
.main-nav.is-open .nav-list { flex-direction: column; align-items: stretch; gap: var(--space-1); }
.main-nav.is-open .nav-link { display: block; padding: var(--space-3) var(--space-4); font-size: var(--text-base); }

/* ===== 8. HERO ===== */
.hero { position: relative; padding: var(--space-12) 0 var(--space-16) 0; overflow: hidden; }
.hero::before { content: ""; position: absolute; top: -200px; left: 50%; width: 800px; height: 800px; transform: translateX(-50%); background: radial-gradient(circle, rgba(208,80,0,0.15) 0%, transparent 60%); pointer-events: none; z-index: 0; }
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 800px; margin: 0 auto; }
.hero-title { font-size: var(--text-5xl); font-weight: var(--weight-extrabold); line-height: 1.15; margin-bottom: var(--space-6); letter-spacing: -0.03em; max-width: 880px; margin-left: auto; margin-right: auto; text-wrap: balance; }
.hero-subtitle { font-size: var(--text-lg); color: var(--text-secondary); line-height: 1.6; margin-bottom: var(--space-8); max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-benefits { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); margin-bottom: var(--space-8); text-align: left; max-width: 540px; margin-left: auto; margin-right: auto; }
.hero-benefits li { display: flex; align-items: flex-start; gap: var(--space-3); color: var(--text-secondary); line-height: 1.5; }
.hero-benefits .check { flex-shrink: 0; width: 22px; height: 22px; border-radius: var(--radius-full); background: var(--success-bg); color: var(--success); display: flex; align-items: center; justify-content: center; font-size: var(--text-sm); font-weight: var(--weight-bold); margin-top: 2px; }
.hero-trust { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: var(--space-2) var(--space-5); margin-top: var(--space-8); color: var(--text-muted); font-size: var(--text-sm); }
.hero-trust span { display: inline-flex; align-items: center; gap: var(--space-2); }

/* ===== 9. HERO SCARCITY (100 attivazioni con tutoring) ===== */
.hero-scarcity { display: inline-flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-5); background: var(--warning-bg); border: 1px solid var(--border-primary); border-radius: var(--radius-xl); margin-top: var(--space-6); color: var(--text-secondary); font-size: var(--text-sm); line-height: 1.5; text-align: left; max-width: 560px; }
.hero-scarcity strong { color: var(--primary-light); font-weight: var(--weight-bold); }

/* ===== 10. PER CHI E' ===== */
.target-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
.target-card { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-xl); padding: var(--space-6); transition: all var(--transition-base); }
.target-card:hover { border-color: var(--border-primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.target-icon { font-size: var(--text-3xl); margin-bottom: var(--space-3); line-height: 1; }
.target-card h3 { font-size: var(--text-lg); color: var(--text-primary); margin-bottom: var(--space-2); }
.target-card p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.6; }
.anti-target { margin-top: var(--space-12); padding-top: var(--space-8); border-top: 1px solid var(--border-subtle); text-align: center; }
.anti-target-title { font-size: var(--text-lg); color: var(--text-muted); margin-bottom: var(--space-6); }
.anti-target-list { display: flex; flex-direction: column; gap: var(--space-3); max-width: 600px; margin: 0 auto; text-align: left; }
.anti-target-list li { list-style: none; color: var(--text-muted); display: flex; align-items: flex-start; gap: var(--space-3); font-size: var(--text-sm); }
.anti-target-list .x-mark { flex-shrink: 0; color: var(--error); font-weight: var(--weight-bold); margin-top: 2px; }

/* ===== 11. PROGRAMMA ===== */
.program-stats { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-6); margin-bottom: var(--space-12); text-align: center; }
.program-stat { display: flex; flex-direction: column; gap: var(--space-1); }
.program-stat-number { font-size: var(--text-3xl); font-weight: var(--weight-extrabold); color: var(--primary-light); line-height: 1; }
.program-stat-label { font-size: var(--text-sm); color: var(--text-muted); }
.program-part { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-2xl); padding: var(--space-8); margin-bottom: var(--space-6); position: relative; overflow: hidden; }
.program-part::before { content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--gradient-primary); }
.program-eyebrow { display: inline-block; color: var(--primary-light); font-size: var(--text-xs); font-weight: var(--weight-bold); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--space-3); }
.program-part-title { font-size: var(--text-2xl); color: var(--text-primary); margin-bottom: var(--space-3); }
.program-part-intro { color: var(--text-secondary); margin-bottom: var(--space-6); line-height: 1.7; }
.program-courses { list-style: none; margin-bottom: var(--space-6); }
.program-courses li { display: flex; align-items: flex-start; gap: var(--space-3); padding: var(--space-3) 0; border-bottom: 1px solid var(--border-subtle); color: var(--text-secondary); line-height: 1.5; }
.program-courses li:last-child { border-bottom: none; }
.program-courses .course-arrow { flex-shrink: 0; color: var(--primary-light); font-weight: var(--weight-bold); margin-top: 2px; }
.program-courses strong { color: var(--text-primary); display: block; margin-bottom: var(--space-1); font-weight: var(--weight-semibold); }
.program-courses em { font-style: normal; font-size: var(--text-sm); color: var(--text-muted); }
.program-outcome { background: var(--gradient-primary-soft); border-left: 3px solid var(--primary); padding: var(--space-4) var(--space-5); border-radius: var(--radius-md); margin-top: var(--space-6); }
.program-outcome strong { color: var(--primary-light); display: block; margin-bottom: var(--space-1); font-size: var(--text-sm); text-transform: uppercase; letter-spacing: 0.05em; }
.program-outcome em { color: var(--text-primary); font-style: normal; line-height: 1.6; }
.program-bonus { background: linear-gradient(135deg, var(--bg-surface-2) 0%, var(--bg-surface) 100%); border: 1px solid var(--border-primary); border-radius: var(--radius-2xl); padding: var(--space-8); margin-top: var(--space-8); }
.program-bonus-eyebrow { display: inline-block; background: var(--gradient-primary); color: var(--text-on-primary); padding: var(--space-1) var(--space-4); border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: var(--weight-bold); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--space-4); }
.program-bonus h3 { font-size: var(--text-2xl); margin-bottom: var(--space-3); }
.program-bonus-list { list-style: none; margin: var(--space-6) 0; display: grid; gap: var(--space-3); }
.program-bonus-list li { display: flex; align-items: flex-start; gap: var(--space-3); color: var(--text-secondary); line-height: 1.5; }
.program-bonus-list .bullet { font-size: var(--text-xl); line-height: 1; }
.program-bonus-close { font-size: var(--text-lg); color: var(--primary-light); font-style: italic; text-align: center; margin-top: var(--space-6); font-weight: var(--weight-medium); }

/* ===== 12. PERCHE' devACADEMY ===== */
.why-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); margin-bottom: var(--space-16); }
.why-card { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-xl); padding: var(--space-6); transition: all var(--transition-base); }
.why-card:hover { border-color: var(--border-primary); transform: translateY(-2px); }
.why-icon { font-size: var(--text-3xl); margin-bottom: var(--space-3); line-height: 1; }
.why-card h3 { font-size: var(--text-lg); color: var(--text-primary); margin-bottom: var(--space-2); }
.why-card p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.6; }
/* Comparativa "Qual è la scelta giusta per te?" - 3 box affiancati */
.choice-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-5); margin-bottom: var(--space-8); }
.choice-card { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-xl); padding: var(--space-6); display: flex; flex-direction: column; transition: all var(--transition-base); }
.choice-card:hover { border-color: var(--border-strong); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.choice-card-highlight { background: linear-gradient(135deg, var(--bg-surface-2) 0%, var(--bg-surface) 100%); border: 2px solid var(--border-primary); box-shadow: var(--shadow-lg); position: relative; }
.choice-card-highlight::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--gradient-primary); border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
.choice-card-highlight:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-xl); }
.choice-card-header { display: flex; align-items: center; gap: var(--space-3); padding-bottom: var(--space-4); margin-bottom: var(--space-4); border-bottom: 1px solid var(--border-subtle); }
.choice-icon { font-size: var(--text-3xl); line-height: 1; flex-shrink: 0; }
.choice-title { font-size: var(--text-xl); color: var(--text-primary); font-weight: var(--weight-bold); margin: 0; }
.choice-card-highlight .choice-title { color: var(--primary-light); }
.choice-body { display: flex; flex-direction: column; gap: var(--space-5); flex: 1; }
.choice-block-title { font-size: var(--text-xs); font-weight: var(--weight-bold); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin: 0 0 var(--space-2) 0; }
.choice-card-highlight .choice-block-title { color: var(--primary-light); }
.choice-block p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.6; margin: 0; }
.choice-honesty { margin-top: auto; padding-top: var(--space-4); border-top: 1px dashed var(--border-default); }
.choice-honesty-label { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-xs); font-weight: var(--weight-bold); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--space-2); }
.choice-honesty p { font-size: var(--text-sm); color: var(--text-muted); font-style: italic; line-height: 1.6; margin: 0; }

.comparison-closing { text-align: center; margin-top: var(--space-8); font-style: italic; color: var(--text-secondary); font-size: var(--text-base); line-height: 1.7; max-width: 700px; margin-left: auto; margin-right: auto; }

/* ===== 13. TUTORING ===== */
.tutoring-intro { max-width: 700px; margin: 0 auto var(--space-12) auto; text-align: center; }
.tutoring-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); margin-bottom: var(--space-8); }
.tutoring-card { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-xl); padding: var(--space-6); }
.tutoring-card-icon { font-size: var(--text-3xl); margin-bottom: var(--space-3); line-height: 1; }
.tutoring-card h3 { font-size: var(--text-lg); color: var(--text-primary); margin-bottom: var(--space-2); }
.tutoring-card p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.6; }
.tutoring-validity { text-align: center; color: var(--text-muted); font-style: italic; margin-bottom: var(--space-8); font-size: var(--text-sm); }
.value-box { background: linear-gradient(135deg, var(--bg-surface-2) 0%, var(--bg-elevated) 100%); border: 2px solid var(--border-primary); border-radius: var(--radius-2xl); padding: var(--space-8); margin: var(--space-8) auto 0 auto; max-width: 600px; position: relative; overflow: hidden; }
.value-box::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at top right, rgba(208,80,0,0.15) 0%, transparent 60%); pointer-events: none; }
.value-box-content { position: relative; z-index: 1; }
.value-box-title { font-size: var(--text-xl); color: var(--text-primary); margin-bottom: var(--space-6); display: flex; align-items: center; gap: var(--space-2); }
.value-table { width: 100%; border-collapse: collapse; margin-bottom: var(--space-6); }
.value-table tr { border-bottom: 1px solid var(--border-subtle); }
.value-table tr:last-child { border-bottom: none; }
.value-table td { padding: var(--space-3) 0; color: var(--text-secondary); font-size: var(--text-sm); line-height: 1.5; }
.value-table td:last-child { text-align: right; color: var(--text-primary); font-weight: var(--weight-semibold); white-space: nowrap; padding-left: var(--space-3); }
.value-table .value-incluso { color: var(--success); font-weight: var(--weight-bold); text-transform: uppercase; font-size: var(--text-xs); }
.value-table .value-total td { padding-top: var(--space-4); color: var(--text-primary); font-weight: var(--weight-bold); font-size: var(--text-base); }
.value-table .value-total td:last-child { color: var(--primary-light); font-size: var(--text-xl); }
.value-final { text-align: center; padding-top: var(--space-4); border-top: 1px solid var(--border-strong); margin-top: var(--space-4); }
.value-final-label { font-size: var(--text-sm); color: var(--text-secondary); margin-bottom: var(--space-1); }
.value-final-price { font-size: var(--text-5xl); font-weight: var(--weight-extrabold); color: var(--primary-light); line-height: 1; margin-bottom: var(--space-2); text-shadow: var(--glow-text); }
.value-final-note { font-size: var(--text-sm); color: var(--text-muted); }
.value-final-rate { display: inline-flex; align-items: center; gap: var(--space-2); margin-top: var(--space-3); padding: var(--space-2) var(--space-4); background: var(--gradient-primary-soft); color: var(--primary-light); border: 1px solid var(--border-primary); border-radius: var(--radius-full); font-size: var(--text-sm); font-weight: var(--weight-bold); }
.value-final-rate strong { color: var(--primary-glow); font-weight: var(--weight-extrabold); }
.value-tagline { text-align: center; color: var(--text-primary); font-weight: var(--weight-medium); font-style: italic; margin-top: var(--space-6); line-height: 1.7; }

/* ===== 13b. SEZIONE DOCENTE ===== */
.instructor-card { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-2xl); padding: var(--space-8); max-width: 720px; margin: 0 auto; position: relative; overflow: hidden; }
.instructor-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--gradient-primary); }
.instructor-header { display: flex; align-items: center; gap: var(--space-4); padding-bottom: var(--space-6); margin-bottom: var(--space-6); border-bottom: 1px solid var(--border-subtle); }
.instructor-avatar { display: inline-flex; align-items: center; justify-content: center; width: 64px; height: 64px; background: var(--gradient-primary); border-radius: var(--radius-lg); flex-shrink: 0; font-size: 30px; line-height: 1; box-shadow: var(--shadow-cta); }
.instructor-avatar span { display: block; line-height: 1; }
.instructor-identity { display: flex; flex-direction: column; gap: 2px; }
.instructor-name { font-size: var(--text-xl); color: var(--text-primary); margin: 0; font-weight: var(--weight-bold); }
.instructor-role { font-size: var(--text-sm); color: var(--text-muted); margin: 0; }
.instructor-body { color: var(--text-secondary); line-height: 1.7; }
.instructor-body p { margin-bottom: var(--space-4); font-size: var(--text-base); }
.instructor-permettera { color: var(--text-primary); font-weight: var(--weight-semibold); margin-top: var(--space-2); margin-bottom: var(--space-3) !important; }
.instructor-bullets { list-style: none; padding: 0; margin: 0 0 var(--space-6) 0; display: flex; flex-direction: column; gap: var(--space-2); }
.instructor-bullets li { display: flex; align-items: flex-start; gap: var(--space-3); color: var(--text-secondary); font-size: var(--text-base); line-height: 1.6; }
.instructor-bullets .bullet { color: var(--primary-light); font-size: var(--text-base); margin-top: 4px; flex-shrink: 0; }
.instructor-closing { color: var(--text-primary) !important; font-weight: var(--weight-semibold); padding: var(--space-4) var(--space-5); background: var(--gradient-primary-soft); border-left: 3px solid var(--primary); border-radius: var(--radius-md); line-height: 1.6; margin-bottom: 0 !important; }

/* ===== 14. RECENSIONI ===== */
.reviews-header { text-align: center; margin-bottom: var(--space-12); }
.reviews-students-count { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-4); background: var(--gradient-primary-soft); color: var(--primary-light); border: 1px solid var(--border-primary); border-radius: var(--radius-full); font-size: var(--text-sm); font-weight: var(--weight-medium); margin-bottom: var(--space-6); }
.reviews-students-count strong { color: var(--primary-glow); font-weight: var(--weight-bold); }

/* Rating Trustpilot grande */
.reviews-rating-big { display: inline-flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-6); background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-xl); margin-top: var(--space-6); }
.reviews-rating-stars { color: #ffb400; letter-spacing: 2px; font-size: var(--text-xl); }
.reviews-rating-value { display: inline-flex; align-items: baseline; color: var(--text-primary); font-size: var(--text-3xl); font-weight: var(--weight-extrabold); line-height: 1; }
.reviews-rating-max { color: var(--text-muted); font-size: var(--text-lg); font-weight: var(--weight-medium); margin-left: 2px; }
.reviews-rating-source { color: var(--text-secondary); font-size: var(--text-base); font-weight: var(--weight-medium); }

.reviews-rating { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-3) var(--space-5); background: var(--success-bg); border-radius: var(--radius-full); margin-bottom: var(--space-4); color: var(--success); font-weight: var(--weight-semibold); font-size: var(--text-sm); }
.stars { color: #ffb400; letter-spacing: 1px; }
.reviews-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); margin-bottom: var(--space-8); }
.review-card { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-xl); padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-4); }
.review-stars { color: #ffb400; font-size: var(--text-base); letter-spacing: 2px; }
.review-title { font-size: var(--text-lg); font-weight: var(--weight-semibold); color: var(--text-primary); line-height: 1.4; }
.review-text { color: var(--text-secondary); line-height: 1.7; font-style: italic; font-size: var(--text-base); }
.review-author { display: flex; align-items: center; gap: var(--space-3); margin-top: auto; padding-top: var(--space-4); border-top: 1px solid var(--border-subtle); }
.review-avatar { width: 40px; height: 40px; border-radius: var(--radius-full); background: var(--gradient-primary); color: var(--text-on-primary); display: flex; align-items: center; justify-content: center; font-weight: var(--weight-bold); font-size: var(--text-sm); flex-shrink: 0; }
.review-author-info { display: flex; flex-direction: column; gap: 2px; }
.review-author-name { color: var(--text-primary); font-weight: var(--weight-semibold); font-size: var(--text-sm); }
.review-author-source { color: var(--text-muted); font-size: var(--text-xs); }
.reviews-all-link { text-align: center; }
.reviews-all-link a { color: var(--primary-light); text-decoration: underline; font-size: var(--text-sm); }

/* ===== 15. GARANZIA ===== */
.guarantee { text-align: center; max-width: 800px; margin: 0 auto; }
.guarantee-icon { font-size: 4rem; margin-bottom: var(--space-4); line-height: 1; display: inline-block; }
.guarantee-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); margin: var(--space-8) 0; text-align: left; }
.guarantee-card { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-xl); padding: var(--space-5); }
.guarantee-card-icon { font-size: var(--text-3xl); margin-bottom: var(--space-2); line-height: 1; }
.guarantee-card h3 { font-size: var(--text-base); color: var(--text-primary); margin-bottom: var(--space-2); }
.guarantee-card p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.6; }
.guarantee-tagline { background: var(--gradient-primary-soft); border-left: 3px solid var(--primary); padding: var(--space-5); border-radius: var(--radius-md); color: var(--text-primary); font-style: italic; font-weight: var(--weight-medium); margin-top: var(--space-8); text-align: center; line-height: 1.6; }

/* ===== 16. FAQ ===== */
.faq-container { max-width: 800px; margin: 0 auto; }
.accordion-item { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-lg); margin-bottom: var(--space-3); overflow: hidden; transition: all var(--transition-base); }
.accordion-item[open] { border-color: var(--border-primary); background: var(--bg-surface-2); }
.accordion-header { display: flex; justify-content: space-between; align-items: center; padding: var(--space-5) var(--space-6); cursor: pointer; font-size: var(--text-lg); font-weight: var(--weight-semibold); color: var(--text-primary); list-style: none; user-select: none; transition: color var(--transition-fast); }
.accordion-header::-webkit-details-marker { display: none; }
.accordion-header:hover { color: var(--primary-light); }
.accordion-icon { flex-shrink: 0; color: var(--primary-light); transition: transform var(--transition-base); font-size: var(--text-xl); width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; }
.accordion-item[open] .accordion-icon { transform: rotate(45deg); }
.accordion-body { padding: 0 var(--space-6) var(--space-6) var(--space-6); color: var(--text-secondary); line-height: 1.7; }
.accordion-body p { margin-bottom: var(--space-3); }
.accordion-body p:last-child { margin-bottom: 0; }
.accordion-body ul { padding-left: var(--space-5); margin-bottom: var(--space-3); }
.accordion-body li { margin-bottom: var(--space-2); }
.accordion-body strong { color: var(--text-primary); }
.accordion-body em { color: var(--text-muted); font-style: italic; }
.faq-help { text-align: center; margin-top: var(--space-8); color: var(--text-secondary); font-size: var(--text-sm); }
.faq-help a { color: var(--primary-light); text-decoration: underline; }

/* ===== 17. CTA FINALE + FORM ACQUISTO ===== */
.final-cta { text-align: center; position: relative; }
.final-cta::before { content: ""; position: absolute; top: 50%; left: 50%; width: 600px; height: 600px; transform: translate(-50%, -50%); background: radial-gradient(circle, rgba(208,80,0,0.12) 0%, transparent 60%); pointer-events: none; z-index: 0; }
.final-cta-content { position: relative; z-index: 1; max-width: 540px; margin: 0 auto; }
.final-cta-title { font-size: var(--text-4xl); margin-bottom: var(--space-4); }
.final-cta-subtitle { font-size: var(--text-lg); color: var(--text-secondary); margin-bottom: var(--space-8); }

/* Card di acquisto */
.purchase-card { background: var(--bg-surface); border: 2px solid var(--border-primary); border-radius: var(--radius-2xl); padding: var(--space-6); margin: 0 auto; text-align: left; box-shadow: var(--shadow-xl); }
.purchase-title { font-size: var(--text-xl); color: var(--text-primary); margin-bottom: var(--space-5); text-align: center; font-weight: var(--weight-bold); }

/* Lista benefit con sfondo dark */
.purchase-benefits { list-style: none; margin-bottom: var(--space-6); padding: var(--space-5); background: var(--bg-base); border-radius: var(--radius-lg); }
.purchase-benefits li { display: flex; align-items: flex-start; gap: var(--space-3); color: var(--text-secondary); font-size: var(--text-sm); line-height: 1.5; padding: var(--space-2) 0; }
.purchase-benefits .check { color: var(--success); font-weight: var(--weight-bold); flex-shrink: 0; margin-top: 2px; font-size: var(--text-base); }

/* Prezzo + badge rate evidente */
.purchase-price { text-align: center; margin-bottom: var(--space-6); padding: var(--space-5) 0; border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }
.purchase-price-label { font-size: var(--text-sm); color: var(--text-muted); margin-bottom: var(--space-2); }
.purchase-price-original { font-size: var(--text-xl); color: var(--text-muted); text-decoration: line-through; margin-bottom: var(--space-1); display: inline-block; opacity: 0.7; }
.purchase-price-promo { font-size: var(--text-2xl); color: var(--text-muted); text-decoration: line-through; margin-bottom: var(--space-1); display: inline-block; opacity: 0.85; }
.purchase-price-amount { font-size: var(--text-5xl); font-weight: var(--weight-extrabold); color: var(--primary-light); line-height: 1; text-shadow: var(--glow-text); margin-bottom: var(--space-3); }
.purchase-price-rate { display: inline-block; background: var(--gradient-primary-soft); color: var(--primary-light); padding: var(--space-2) var(--space-4); border-radius: var(--radius-full); font-size: var(--text-sm); font-weight: var(--weight-bold); border: 1px solid var(--border-primary); margin-top: var(--space-1); }
.purchase-price-rate strong { color: var(--primary-glow); font-weight: var(--weight-extrabold); }

/* FORM - ristrutturato */
.purchase-form-fields { display: flex; flex-direction: column; gap: var(--space-4); margin-bottom: var(--space-5); }
.form-group { display: flex; flex-direction: column; }
.form-label { display: block; font-size: var(--text-sm); font-weight: var(--weight-semibold); color: var(--text-primary); margin-bottom: var(--space-2); }
.form-label-required::after { content: " *"; color: var(--primary-light); margin-left: 2px; }
.form-label-optional { color: var(--text-muted); font-weight: var(--weight-normal); font-size: var(--text-xs); margin-left: var(--space-2); }
.form-input { display: block; width: 100%; padding: 14px 16px; background: var(--bg-base); color: var(--text-primary); border: 1px solid var(--border-default); border-radius: var(--radius-md); font-family: var(--font-primary); font-size: var(--text-base); transition: all var(--transition-fast); -webkit-appearance: none; appearance: none; box-sizing: border-box; line-height: 1.4; }
.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(208,80,0,0.15); background: var(--bg-elevated); }
.form-input::placeholder { color: var(--text-muted); opacity: 0.6; }
.form-input:invalid:not(:placeholder-shown):not(:focus) { border-color: var(--error); }
.form-help { font-size: var(--text-xs); color: var(--text-muted); margin-top: var(--space-2); line-height: 1.5; }

/* Checkbox - ognuna in riga separata con respiro */
.form-checkboxes { display: flex; flex-direction: column; gap: var(--space-4); margin-bottom: var(--space-6); padding-top: var(--space-5); border-top: 1px solid var(--border-subtle); }
.form-checkbox-wrapper { display: flex; align-items: flex-start; gap: var(--space-3); cursor: pointer; }
.form-checkbox { width: 20px; height: 20px; margin: 2px 0 0 0; accent-color: var(--primary); cursor: pointer; flex-shrink: 0; }
.form-checkbox-label { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.5; cursor: pointer; flex: 1; }
.form-checkbox-label a { color: var(--primary-light); text-decoration: underline; }
.form-checkbox-label a:hover { color: var(--primary-glow); }
.form-checkbox-required { color: var(--primary-light); font-weight: var(--weight-semibold); }

.purchase-form-info { text-align: center; font-size: var(--text-sm); color: var(--text-muted); margin-top: var(--space-4); line-height: 1.6; padding-top: var(--space-4); border-top: 1px solid var(--border-subtle); }
.purchase-form-info strong { color: var(--text-secondary); display: block; margin-bottom: var(--space-2); }

/* Payment badges - logo PayPal + carte sotto al pulsante acquisto */
.payment-badges { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); margin-top: var(--space-4); padding-top: var(--space-4); border-top: 1px solid var(--border-subtle); }
.payment-badges-row { display: flex; align-items: center; justify-content: center; gap: var(--space-3); flex-wrap: wrap; }
.payment-paypal { background: #ffffff; padding: var(--space-2) var(--space-3); border-radius: var(--radius-md); display: inline-flex; align-items: center; height: 38px; box-sizing: border-box; }
.payment-paypal img { display: block; height: 22px; width: auto; }
.payment-cards { display: inline-flex; align-items: center; gap: var(--space-2); }
.payment-cards img { display: block; height: 24px; width: auto; border-radius: 3px; box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
.payment-secure-label { font-size: var(--text-xs); color: var(--text-muted); display: inline-flex; align-items: center; gap: var(--space-1); }

/* Hero trust badge PayPal */
.hero-trust-paypal { background: #ffffff; padding: 2px 8px; border-radius: var(--radius-sm); display: inline-flex; align-items: center; height: 24px; box-sizing: border-box; }
.hero-trust-paypal img { display: block; height: 14px; width: auto; }

.alt-payment { text-align: center; margin-top: var(--space-6); font-size: var(--text-sm); color: var(--text-muted); }
.alt-payment a { color: var(--primary-light); text-decoration: underline; }

/* ===== 18. FOOTER ===== */
.site-footer { background: var(--bg-elevated); border-top: 1px solid var(--border-subtle); padding: var(--space-12) 0 var(--space-8) 0; margin-top: var(--space-16); }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-8); margin-bottom: var(--space-8); }
.footer-brand { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-logo { height: 44px; width: auto; margin-bottom: var(--space-3); display: block; }
.footer-brand p { font-size: var(--text-sm); color: var(--text-muted); line-height: 1.6; }
.footer-contacts { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-2); }
.footer-contacts a { color: var(--text-secondary); font-size: var(--text-sm); text-decoration: none; display: inline-flex; align-items: center; gap: var(--space-2); }
.footer-contacts a:hover { color: var(--primary-light); }
.footer-contacts .footer-icon { display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; font-size: 16px; line-height: 1; flex-shrink: 0; color: var(--primary-light); }
.footer-col h4 { font-size: var(--text-xs); font-weight: var(--weight-bold); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--space-4); }
.footer-company { color: var(--text-muted); font-size: var(--text-sm); line-height: 1.6; }
.footer-company strong { color: var(--text-secondary); display: block; margin-bottom: var(--space-1); }
.footer-cert { color: var(--text-muted); font-size: var(--text-sm); line-height: 1.6; }
.footer-cert-badge { color: var(--primary-light); font-weight: var(--weight-semibold); display: block; margin-bottom: var(--space-3); }
.footer-cert-logo { display: inline-block; background: #ffffff; padding: var(--space-2) var(--space-3); border-radius: var(--radius-md); margin-bottom: var(--space-3); }
.footer-cert-logo img { display: block; height: 50px; width: auto; }
.footer-bottom { border-top: 1px solid var(--border-subtle); padding-top: var(--space-6); display: flex; flex-direction: column; align-items: center; gap: var(--space-3); text-align: center; }
.footer-copyright { color: var(--text-muted); font-size: var(--text-sm); }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-2) var(--space-4); font-size: var(--text-sm); }
.footer-links a { color: var(--text-muted); }
.footer-links a:hover { color: var(--primary-light); }
.footer-links .sep { color: var(--text-muted); opacity: 0.5; }

/* ===== 18b. LEAD MODAL (Soft email gate) ===== */
.lead-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: var(--z-modal-bg);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    overflow-y: auto;
}
.lead-modal-backdrop.is-open {
    display: flex;
    animation: fadeIn 200ms ease;
}
.lead-modal {
    position: relative;
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-8) var(--space-6) var(--space-6) var(--space-6);
    max-width: 460px;
    width: 100%;
    text-align: center;
    z-index: var(--z-modal);
    box-shadow: var(--shadow-xl);
    animation: slideUp 300ms ease;
    margin: auto;
}
.lead-modal::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}
.lead-modal-close {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(255,255,255,0.05);
    color: var(--text-muted);
    font-size: 24px;
    line-height: 1;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.lead-modal-close:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.1);
}
.lead-modal-icon {
    font-size: 48px;
    margin-bottom: var(--space-4);
    line-height: 1;
}
.lead-modal-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-3);
    line-height: 1.25;
}
.lead-modal-text {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: 1.6;
    margin-bottom: var(--space-6);
}
.lead-modal-form { text-align: left; }
.lead-modal-field { margin-bottom: var(--space-4); }
.lead-modal-input { padding: 14px 16px; }
.lead-modal-consent { margin-bottom: var(--space-4); }
.lead-modal-submit { margin-top: var(--space-2); }
.lead-modal-disclaimer {
    text-align: center;
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: var(--space-4);
    line-height: 1.5;
}
.lead-modal-error {
    margin-top: var(--space-2);
    font-size: var(--text-sm);
    color: var(--error);
}
.lead-modal-success {
    text-align: center;
    padding: var(--space-4) 0;
}
.lead-modal-success-icon {
    width: 60px;
    height: 60px;
    background: var(--success-bg);
    color: var(--success);
    font-size: 32px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    line-height: 1;
}
.lead-modal-success h4 {
    font-size: var(--text-xl);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}
.lead-modal-success p {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: 1.6;
}
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* ===== 18c. FORM VALIDATION STATES ===== */
.form-input.is-invalid {
    border-color: var(--error);
    background: rgba(220, 53, 69, 0.05);
}
.form-input.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.15);
}
.form-input.is-valid {
    border-color: var(--success);
}
.form-input.is-valid:focus {
    box-shadow: 0 0 0 3px rgba(92, 184, 92, 0.15);
}
.form-error-live {
    font-size: var(--text-xs);
    color: var(--error);
    margin-top: var(--space-2);
    line-height: 1.5;
    font-weight: var(--weight-medium);
}
.btn.is-ready {
    box-shadow: var(--shadow-cta-hover);
}

/* ===== 18d. ACTIVE NAV MENU STATE ===== */
.nav-link.is-active {
    color: var(--primary-light);
    background: rgba(208, 80, 0, 0.08);
    position: relative;
}
.nav-link.is-active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

/* ===== 18e. FADE-IN ANIMATION (on viewport) ===== */
.animate-fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 500ms ease, transform 500ms ease;
}
.animate-fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
    .animate-fade-in {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ===== 18g. PROMO BANNER TOP ===== */
.promo-banner {
    width: 100%;
    color: #ffffff;
    padding: 10px 0;
    text-align: center;
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.3px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    position: relative;
    z-index: 100;
}
.promo-banner .container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}
.promo-banner-icon {
    font-size: 1.1em;
    line-height: 1;
}
.promo-banner-text {
    line-height: 1.3;
}
/* CTA bottoni con prezzo barrato (quando show_strike_on_cta è attivo) */
.cta-price-original {
    text-decoration: line-through;
    opacity: 0.65;
    font-weight: 500;
    margin-right: 6px;
    font-size: 0.85em;
}
.cta-price-final {
    font-weight: var(--weight-extrabold);
}

/* =============================================================================
   MOBILE OPTIMIZATION (mobile-first refinements)
   ============================================================================= */

/* Anti-overflow globale: previene scroll orizzontale causato da pseudo-elementi
   decorativi (glow arancioni sotto hero e final-cta) */
html, body { overflow-x: hidden; max-width: 100vw; }

/* iPhone SE, Galaxy A, schermi piccoli */
@media (max-width: 600px) {
    /* Container con padding leggermente più generoso */
    :root { --container-padding: var(--space-5); }

    /* SCALA TIPOGRAFICA mobile: tutti i font-size aumentati di ~10-15% per
       leggibilità su smartphone. Ridefinendo le variabili a cascata, tutti
       gli elementi che le usano si adeguano automaticamente. */
    :root {
        --text-xs: 0.8125rem;   /* 13px (era 12px) */
        --text-sm: 0.9375rem;   /* 15px (era 14px) */
        --text-base: 1.0625rem; /* 17px (era 16px) - standard iOS/Android */
        --text-lg: 1.1875rem;   /* 19px (era 18px) */
        --text-xl: 1.375rem;    /* 22px (era 20px) */
        --text-2xl: 1.625rem;   /* 26px (era 24px) */
        --text-3xl: 1.875rem;   /* 30px (era 30px) */
    }

    /* Font body esplicito (in caso il browser non recalcoli la cascade) */
    body { font-size: var(--text-base); }

    /* Glow decorativi: rimpiccioliti per non causare scroll orizzontale */
    .hero::before { width: 100vw; height: 100vw; max-width: 600px; max-height: 600px; }
    .final-cta::before { width: 100vw; height: 100vw; max-width: 500px; max-height: 500px; }

    /* Banner promo: più compatto */
    .promo-banner { padding: 8px 0; font-size: 14px; }

    /* SEZIONI: padding verticale ridotto su mobile */
    .section { padding: var(--space-12) 0; }

    /* CTA: full-width su mobile, due righe (label sopra, prezzi sotto) */
    .btn-cta {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        width: 100%;
        max-width: 100%;
        padding: var(--space-4) var(--space-5);
        font-size: 14px;
        font-weight: var(--weight-medium);
        white-space: normal;
        text-align: center;
        line-height: 1.2;
    }
    .btn-cta .cta-label {
        font-size: 14px;
        font-weight: var(--weight-medium);
    }
    .btn-cta .cta-prices {
        display: inline-flex;
        align-items: baseline;
        gap: 6px;
    }
    .btn-cta .cta-prices .cta-price-original {
        font-size: 13px;
        opacity: 0.65;
        font-weight: 400;
        margin-right: 0;
    }
    .btn-cta .cta-prices .cta-price-final {
        font-size: 22px;
        font-weight: var(--weight-bold);
    }

    /* Btn generico: meno white-space:nowrap che spacca su mobile */
    .btn {
        white-space: normal;
        line-height: 1.3;
    }

    /* PURCHASE CARD: più stretta + padding ridotto */
    .purchase-card {
        padding: var(--space-5) var(--space-4);
        border-radius: var(--radius-xl);
    }
    .purchase-title { font-size: var(--text-xl); }
    .purchase-price-amount { font-size: clamp(2.5rem, 12vw, 3.5rem); }
    .purchase-price-original { font-size: var(--text-lg); }
    .purchase-price-promo { font-size: var(--text-xl); }

    /* VALORE STACKING TABLE: padding interno ridotto, font size compatto */
    .value-table { font-size: var(--text-sm); }
    .value-table td { padding: var(--space-3) var(--space-2); }
    .value-final-price { font-size: clamp(2.5rem, 11vw, 3.5rem); }

    /* CARDS varie (target-card, etc): padding interno ridotto */
    .target-card { padding: var(--space-5); }

    /* HERO: gap ridotti */
    .hero-content { padding: 0 var(--space-1); }
    .hero-benefits { text-align: left; }

    /* FINAL CTA section: padding interno ridotto */
    .final-cta-title { font-size: var(--text-3xl); }
    .final-cta-subtitle { font-size: var(--text-base); }

    /* Form input: leggermente più piccolo su mobile */
    .form-input { font-size: var(--text-base); padding: 12px 14px; }

    /* CTA price barrato: micro fix */
    .cta-price-original { font-size: 0.75em; margin-right: 4px; }
}

/* Schermi piccolissimi (Galaxy Fold chiuso, vecchi iPhone 5/SE 1st gen) */
@media (max-width: 380px) {
    :root { --container-padding: var(--space-4); }
    .btn-cta { padding: var(--space-4) var(--space-3); font-size: 15px; }
    .purchase-card { padding: var(--space-4) var(--space-3); }
    .value-table td { padding: var(--space-2); font-size: var(--text-xs); }
    .hero-title { font-size: clamp(1.75rem, 7vw, 2.25rem); }
    .final-cta-title { font-size: clamp(1.5rem, 6vw, 2rem); }
}

/* ===== 19. CARD (usata in grazie.php e pagine generiche) ===== */
.card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
}
.card h3 {
    color: var(--text-primary);
}
@media (max-width: 768px) {
    .card { padding: var(--space-5); }
}

/* ===== 20. PAYPAL CHECKOUT (Smart Buttons) ===== */
.paypal-button-container {
    margin-top: var(--space-4);
    min-height: 50px;
}
.paypal-button-container:empty {
    display: none;
}
.paypal-error {
    margin-top: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid var(--error);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    line-height: 1.5;
}
.paypal-loading {
    margin-top: var(--space-3);
    padding: var(--space-3);
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}
.paypal-loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-muted);
    border-top-color: var(--primary);
    border-radius: var(--radius-full);
    animation: spin 0.6s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
    .paypal-loading-spinner { animation: none; }
}

/* ===== 19. ANIMAZIONI ===== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; } }

/* ===== 20. RESPONSIVE TABLET (>=768px) ===== */
@media (min-width: 768px) {
    :root { --container-padding: var(--space-6); }
    .section { padding: var(--space-24) 0; }
    .header-cta { display: inline-flex; }
    /* Da tablet in su: nascondi hamburger, mostra nav inline */
    .nav-toggle { display: none; }
    .main-nav { display: block; flex: 1; justify-content: center; }
    .main-nav .nav-list { justify-content: center; }
    .main-nav.is-open { position: static; background: transparent; border: none; padding: 0; box-shadow: none; animation: none; }
    .main-nav.is-open .nav-list { flex-direction: row; gap: var(--space-1); }
    .main-nav.is-open .nav-link { display: inline-block; padding: var(--space-2) var(--space-3); font-size: var(--text-sm); }
    .hero { padding: var(--space-20) 0 var(--space-24) 0; }
    .target-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
    .program-stats { gap: var(--space-12); }
    .program-stat-number { font-size: var(--text-4xl); }
    .why-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
    .choice-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
    .tutoring-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
    .reviews-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
    .guarantee-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
    .footer-grid { grid-template-columns: 2fr 1fr 1fr; gap: var(--space-12); }
    .footer-bottom { flex-direction: row; justify-content: space-between; }
}

/* ===== 21. RESPONSIVE DESKTOP (>=1024px) ===== */
@media (min-width: 1024px) {
    .target-grid { grid-template-columns: repeat(3, 1fr); }
    .why-grid { grid-template-columns: repeat(3, 1fr); }
    .tutoring-grid { grid-template-columns: repeat(4, 1fr); }
    .guarantee-grid { grid-template-columns: repeat(4, 1fr); }
    .hero-title { font-size: var(--text-6xl); }
}

/* =============================================================================
   LEAD MODAL v2 - Domanda diretta
   Stili aggiuntivi per i nuovi elementi (select, textarea, counter, errori
   per-field, hint). Da appendere a style.css mantenendo gli stili esistenti
   di .lead-modal-* per backdrop, container, icon, title, etc.
   ============================================================================= */

/* Modal più alto per ospitare i nuovi campi */
.lead-modal {
    max-height: 90vh;
    overflow-y: auto;
}

/* Title leggermente più compatto */
.lead-modal-title {
    font-size: var(--text-2xl);
    line-height: 1.25;
    margin-bottom: var(--space-3);
}
.lead-modal-text {
    margin-bottom: var(--space-5);
}

/* Field spacing più aerato */
.lead-modal-field { margin-bottom: var(--space-4); }
.lead-modal-form .form-label {
    font-size: var(--text-sm);
    margin-bottom: var(--space-2);
}

/* Select: stesso aspetto degli input ma con freccia custom */
.lead-modal-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23999'%3E%3Cpath d='M3.5 5.5l4.5 4.5 4.5-4.5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 16px;
    padding-right: 40px;
    cursor: pointer;
}
.lead-modal-select:invalid,
.lead-modal-select option[disabled] {
    color: var(--text-muted);
}
.lead-modal-select option {
    color: var(--text-primary);
    background-color: var(--bg-surface);
}

/* Textarea: stesso aspetto degli input, no resize orizzontale */
.lead-modal-textarea {
    resize: vertical;
    min-height: 80px;
    font-family: inherit;
    line-height: 1.5;
}

/* Counter caratteri textarea */
.lead-modal-counter {
    text-align: right;
    margin-top: var(--space-1);
    font-size: var(--text-xs);
    color: var(--text-muted);
}
.lead-modal-counter.is-warning { color: var(--primary-light); }
.lead-modal-counter.is-error { color: #DC3545; }

/* Errori per-field (sotto ogni campo) */
.lead-modal-field-error {
    margin-top: var(--space-2);
    font-size: var(--text-xs);
    color: #DC3545;
}

/* Input/select/textarea in stato error */
.lead-modal-input[aria-invalid="true"],
.lead-modal-select[aria-invalid="true"],
.lead-modal-textarea[aria-invalid="true"] {
    border-color: #DC3545;
}

/* Errore generico (network/server) sopra il bottone submit */
.lead-modal-error {
    margin-bottom: var(--space-3);
    padding: var(--space-3);
    background: rgba(220, 53, 69, 0.08);
    border-radius: var(--radius-md);
    color: #DC3545;
    font-size: var(--text-sm);
}

/* Mobile refinements */
@media (max-width: 600px) {
    .lead-modal {
        padding: var(--space-5);
        max-height: 95vh;
    }
    .lead-modal-title { font-size: var(--text-xl); }
    .lead-modal-text { font-size: var(--text-sm); margin-bottom: var(--space-4); }
    .lead-modal-icon { font-size: 2.5rem; }
}

/* ===== FINE ===== */