/* ========================================
   Aidio — Design System
   Pour les aidants familiaux (40-60 ans)
   Light, accessible, chaleureux
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: #1E293B;
  background: #FFFFFF;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color 0.2s; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* --- CSS Variables --- */
:root {
  --primary: #6366F1;
  --primary-dark: #4F46E5;
  --primary-light: #EEF2FF;
  --success: #10B981;
  --success-light: #ECFDF5;
  --warning: #F59E0B;
  --warning-light: #FFFBEB;
  --danger: #EF4444;
  --danger-light: #FEF2F2;

  --text: #1E293B;
  --text-secondary: #475569;
  --text-muted: #94A3B8;

  --bg: #FFFFFF;
  --bg-subtle: #F8FAFC;
  --bg-card: #FFFFFF;
  --border: #E2E8F0;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.08);

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
}

/* --- Layout --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section {
  padding: 5rem 0;
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}
.section-header h2 {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* --- Typography --- */
.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, #8B5CF6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99,102,241,0.3);
}
.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.btn-sm { padding: 0.5rem 1rem; font-size: 0.85rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.9rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-premium { background: linear-gradient(135deg, var(--primary), #8B5CF6); color: white; }

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--border);
  transition: all 0.3s;
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  transition: all 0.3s;
}
.navbar.scrolled {
  padding: 0.5rem 0;
  box-shadow: 0 1px 8px rgba(0,0,0,0.06);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
}
.logo-icon {
  font-size: 1.6rem;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}
.nav-links a:hover { color: var(--primary); }
.nav-mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text);
}

/* --- Hero --- */
.hero {
  padding: 8rem 0 4rem;
  background: linear-gradient(180deg, var(--primary-light) 0%, var(--bg) 100%);
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero-content h1 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}
.hero-content p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 480px;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 2.5rem;
}
.hero-stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
}
.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* --- Hero Mockup --- */
.hero-visual { position: relative; }
.hero-mockup {
  background: white;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  position: relative;
}
.mockup-notification {
  position: absolute;
  top: -12px; right: -8px;
  background: var(--danger);
  color: white;
  padding: 0.35rem 0.9rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(239,68,68,0.3);
}
.mockup-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}
.mockup-avatar { font-size: 2rem; }
.mockup-name { font-weight: 700; }
.mockup-role { font-size: 0.85rem; color: var(--text-muted); }
.mockup-tasks { display: flex; flex-direction: column; gap: 0.6rem; }
.mockup-task {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
}
.mockup-task-icon { font-size: 1.2rem; }
.mockup-task-time {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* --- Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.feature-card { text-align: center; padding: 2rem 1.5rem; }
.feature-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Steps --- */
.steps-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.step-card {
  text-align: center;
  padding: 2rem;
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 1rem;
}
.step-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.step-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* --- Pricing --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
}
.pricing-card { text-align: center; }
.pricing-card.featured {
  border: 2px solid var(--primary);
  position: relative;
  transform: scale(1.03);
}
.pricing-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.pricing-price {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 0.25rem;
}
.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}
.pricing-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.pricing-features {
  text-align: left;
  margin-bottom: 1.5rem;
}
.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  font-size: 0.9rem;
}
.check { color: var(--success); font-weight: 700; }
.lock { color: var(--text-muted); }

/* --- Testimonials --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.testimonial-card { display: flex; flex-direction: column; }
.testimonial-text {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--text-secondary);
  flex: 1;
  margin-bottom: 1.5rem;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.testimonial-avatar { font-size: 2rem; }
.testimonial-name { font-weight: 700; font-size: 0.9rem; }
.testimonial-role { font-size: 0.8rem; color: var(--text-muted); }

/* --- CTA Section --- */
.cta-section {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--primary) 0%, #8B5CF6 100%);
  text-align: center;
  color: white;
}
.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
}
.cta-section p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
}
.cta-section .btn-primary {
  background: white;
  color: var(--primary);
}
.cta-section .btn-primary:hover {
  background: var(--bg-subtle);
  box-shadow: 0 4px 12px rgba(255,255,255,0.3);
}

/* --- Footer --- */
.footer {
  padding: 3rem 0 1.5rem;
  background: #0F172A;
  color: #CBD5E1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-brand p {
  font-size: 0.85rem;
  margin-top: 0.75rem;
  color: #94A3B8;
}
.footer h4 {
  color: white;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}
.footer ul li { margin-bottom: 0.4rem; }
.footer ul a {
  font-size: 0.85rem;
  color: #94A3B8;
}
.footer ul a:hover { color: white; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid #1E293B;
  font-size: 0.8rem;
  color: #64748B;
}

/* --- Fade-in Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s, transform 0.6s;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- App Styles --- */
.app-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: white;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.app-tabs {
  display: flex;
  gap: 0;
  background: var(--bg-subtle);
  border-radius: var(--radius);
  padding: 4px;
}
.app-tab {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}
.app-tab.active {
  background: white;
  color: var(--primary);
  box-shadow: var(--shadow);
}
.app-main {
  padding: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}
.app-section {
  margin-bottom: 2rem;
}
.app-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.task-list { display: flex; flex-direction: column; gap: 0.5rem; }
.task-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}
.task-item:hover { border-color: var(--primary); }
.task-item.done { opacity: 0.5; }
.task-item.done .task-title { text-decoration: line-through; }
.task-checkbox {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
}
.task-item.done .task-checkbox {
  background: var(--success);
  border-color: var(--success);
  color: white;
}
.task-title { font-weight: 500; font-size: 0.9rem; }
.task-meta {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.add-task-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  width: 100%;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  justify-content: center;
  transition: all 0.2s;
  cursor: pointer;
}
.add-task-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

/* --- Info Cards (App) --- */
.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.info-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.info-card h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.25rem;
}
.info-card p {
  font-weight: 600;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.contact-item:last-child { border-bottom: none; }
.contact-icon { font-size: 1.5rem; }
.contact-name { font-weight: 600; font-size: 0.9rem; }
.contact-spec { font-size: 0.8rem; color: var(--text-muted); }

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: 90%;
  max-width: 480px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  transform: translateY(20px);
  transition: transform 0.3s;
}
.modal-overlay.active .modal { transform: translateY(0); }
.modal h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 1.5rem; }
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--text-secondary);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}
.modal-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.modal-actions .btn { flex: 1; }

/* --- Beta Form --- */
.beta-page {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-light) 0%, #FEF3C7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.beta-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 520px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}
.beta-card h1 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.beta-card .subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}
.beta-counter {
  text-align: center;
  padding: 0.75rem;
  background: var(--success-light);
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: #065F46;
  font-weight: 600;
}
.beta-success {
  text-align: center;
  padding: 2rem;
}
.beta-success h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 1rem 0 0.5rem;
  color: var(--text);
}
.beta-success p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 2.2rem; }
  .hero-visual { display: none; }
  .hero-stats { gap: 1.5rem; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-container { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card.featured { transform: none; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; }
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .info-grid { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 1.7rem; }
}