/**
 * style.css — Estilos completos del sitio web de ClassVault
 * Dark mode premium, responsive, misma estética que la extensión
 */

/* ============================================================
   Fuentes (Google Fonts CDN — solo para el website, no la extensión)
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=DM+Sans:wght@400;500;700&display=swap');

/* ============================================================
   Variables CSS (requeridas por todos los componentes)
   ============================================================ */

:root {
  --bg: #0a0a0f;
  --bg2: #111118;
  --surface: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.06);
  --text: #f0f0f5;
  --text2: #8b8b9e;
  --text3: #5a5a6e;
  --accent: #10b981;
  --accent2: #00ff88;
  --accentDim: rgba(16, 185, 129, 0.15);
  --radius: 16px;
  --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --fontBody: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ============================================================
   Base (por si se carga sin el HTML inline)
   ============================================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--fontBody);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--font); letter-spacing: -0.3px; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent2); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
section { padding: 80px 0; }

/* Botones base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 12px;
  font-family: var(--font);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #0a0a0f;
}
.btn-primary:hover {
  box-shadow: 0 4px 25px rgba(0, 255, 136, 0.3);
  transform: translateY(-2px);
  color: #0a0a0f;
}
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.12);
}

/* ============================================================
   Header
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header-logo img { height: 36px; }

.header-nav {
  display: flex;
  gap: 32px;
}

.header-nav a {
  color: var(--text2);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.header-nav a:hover { color: var(--text); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}

.lang-toggle a { color: var(--text3); }
.lang-toggle .lang-active { color: var(--accent); font-weight: 600; }
.lang-sep { color: var(--text3); }

.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-lg { padding: 16px 32px; font-size: 16px; }

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  padding: 160px 0 100px;
  text-align: center;
}

.hero-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text2);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.hero-actions { margin-bottom: 32px; }

.hero-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text3);
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text2);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
}

.store-badge:hover {
  border-color: rgba(255,255,255,0.12);
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

/* ============================================================
   Secciones comunes
   ============================================================ */

.section-title {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  text-align: center;
  color: var(--text2);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 48px;
}

/* ============================================================
   Cards grid
   ============================================================ */

.cards-grid {
  display: grid;
  gap: 20px;
}

.cards-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s;
}

.card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.1);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.card-icon {
  font-size: 28px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.card p {
  font-size: 14px;
  color: var(--text2);
  line-height: 1.5;
}

/* ============================================================
   Solution / Mockup
   ============================================================ */

.mockup-container {
  max-width: 800px;
  margin: 0 auto;
}

.mockup-placeholder {
  aspect-ratio: 16/10;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.mockup-inner {
  color: var(--text3);
  font-size: 18px;
  font-weight: 600;
}

/* ============================================================
   Platforms
   ============================================================ */

.platforms { padding: 60px 0; }

.platform-badges {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.platform-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 40px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.platform-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

/* ============================================================
   How it Works
   ============================================================ */

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 220px;
  max-width: 300px;
  text-align: center;
  padding: 32px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.step-number {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-size: 20px;
  font-weight: 800;
  color: #0a0a0f;
}

.step h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  font-size: 14px;
  color: var(--text2);
}

.step-arrow {
  font-size: 24px;
  color: var(--text3);
  padding-top: 52px;
}

/* ============================================================
   Pricing
   ============================================================ */

.pricing-card {
  max-width: 700px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
}

.pricing-free, .pricing-pro {
  padding: 36px 32px;
}

.pricing-divider {
  width: 1px;
  background: var(--border);
}

.pricing-pro {
  position: relative;
  background: rgba(16, 185, 129, 0.03);
}

.pricing-pro-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #0a0a0f;
}

.pricing-amount {
  font-family: var(--font);
  font-size: 36px;
  font-weight: 800;
  margin: 12px 0 20px;
  letter-spacing: -1px;
}

.pricing-period {
  font-size: 14px;
  font-weight: 500;
  color: var(--text3);
}

.pricing-features {
  list-style: none;
}

.pricing-features li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--text2);
}

.pricing-features li::before {
  content: '✓ ';
  color: var(--accent);
  font-weight: 700;
}

.pricing-footer {
  padding: 20px 32px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text3);
}

.payment-icons {
  display: flex;
  gap: 16px;
}

/* ============================================================
   Checkout
   ============================================================ */

.checkout-card {
  max-width: 480px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
}

.checkout-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
}

.form-input {
  padding: 12px 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-family: var(--fontBody);
  font-size: 14px;
  outline: none;
  transition: all 0.2s;
  width: 100%;
}

.form-input::placeholder { color: var(--text3); }
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accentDim); }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text2);
  cursor: pointer;
}

.checkbox-label input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.input-with-status {
  position: relative;
}

.vat-status {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
}

.price-breakdown {
  padding: 16px;
  background: rgba(255,255,255,0.02);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.price-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  font-size: 14px;
  color: var(--text2);
}

.price-total {
  border-top: 1px solid var(--border);
  margin-top: 8px;
  padding-top: 8px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}

.payment-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: rgba(255,255,255,0.03);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.payment-tab {
  flex: 1;
  padding: 10px 8px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text3);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.payment-tab:hover { color: var(--text2); }

.payment-tab.active {
  background: rgba(255,255,255,0.08);
  color: var(--text);
}

.payment-content { margin-top: 4px; }

/* ============================================================
   FAQ
   ============================================================ */

.faq-list {
  max-width: 680px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  padding: 20px 0;
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s;
}

.faq-question::after {
  content: '+';
  font-size: 20px;
  color: var(--text3);
  transition: transform 0.3s;
}

.faq-item.open .faq-question::after {
  content: '−';
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 0 20px;
  font-size: 14px;
  color: var(--text2);
  line-height: 1.6;
}

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand p {
  font-size: 12px;
  color: var(--text3);
  margin-top: 6px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text3);
}

.footer-links a:hover { color: var(--text2); }

.footer-lang { font-size: 13px; }
.footer-lang a { color: var(--text3); }
.footer-lang .lang-active { color: var(--accent); }

.footer-disclaimer {
  font-size: 11px;
  color: var(--text3);
  text-align: center;
  line-height: 1.5;
  max-width: 700px;
  margin: 0 auto;
}

/* ============================================================
   Coming Soon
   ============================================================ */

.coming-soon {
  min-height: calc(100vh - 64px - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 80px;
  text-align: center;
}

.coming-soon-inner {
  max-width: 520px;
  margin: 0 auto;
}

.coming-soon-logo {
  margin-bottom: 32px;
}

.coming-soon-logo img {
  height: 64px;
}

.coming-soon-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.coming-soon-subtitle {
  font-size: 16px;
  color: var(--text2);
  line-height: 1.6;
  margin-bottom: 36px;
}

.coming-soon-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.coming-soon-input-row {
  display: flex;
  gap: 8px;
}

.coming-soon-input-row .form-input {
  flex: 1;
}

.coming-soon-input-row .btn {
  white-space: nowrap;
}

.consent-label {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  color: var(--text3);
  text-align: left;
  cursor: pointer;
  line-height: 1.5;
}

.consent-label input {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.consent-label a {
  color: var(--accent);
}

.waitlist-message {
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  text-align: center;
}

.waitlist-message.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--accent);
}

.waitlist-message.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

/* Header en modo coming soon: logo centrado */
.header-inner.header-coming-soon {
  justify-content: center !important;
}

/* ============================================================
   Preview Lock / Modal
   ============================================================ */

.preview-lock-btn {
  background: none;
  border: none;
  color: var(--text3);
  cursor: pointer;
  opacity: 0.3;
  transition: opacity 0.2s;
  padding: 8px;
}

.preview-lock-btn:hover {
  opacity: 0.7;
}

.preview-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  width: 320px;
  position: relative;
}

.preview-modal h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  text-align: center;
}

.preview-modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text3);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}

.preview-modal-close:hover {
  color: var(--text);
}

.preview-error {
  margin-top: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  text-align: center;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

/* ============================================================
   Fix: Select options en dark mode
   ============================================================ */

.form-input option {
  background: #1a1a24;
  color: #f0f0f5;
}

select.form-input {
  appearance: auto;
  -webkit-appearance: auto;
}

/* ============================================================
   Utilities
   ============================================================ */

.hidden { display: none !important; }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 768px) {
  .header-nav { display: none; }
  .mobile-menu-btn { display: block; }
  .cards-3 { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-divider { width: 100%; height: 1px; }
  .steps { flex-direction: column; align-items: center; }
  .step-arrow { display: none; }
  .hero { padding: 120px 0 60px; }
  .hero-title { font-size: 32px; }
  section { padding: 60px 0; }
  .footer-inner { flex-direction: column; text-align: center; }
  .store-badge { font-size: 12px; padding: 8px 14px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .checkout-card { padding: 20px; }
  .hero-badges { flex-direction: column; align-items: center; }
  .coming-soon-input-row { flex-direction: column; }
  .coming-soon { padding: 100px 0 60px; }
}