/* ============================================
   SEIZE JANVIER — Design System
   ============================================ */

:root {
  --color-bg: #0a0a0b;
  --color-bg-2: #111114;
  --color-bg-card: #15151a;
  --color-bg-card-hover: #1c1c23;
  --color-border: rgba(255, 255, 255, 0.07);
  --color-border-hover: rgba(255, 255, 255, 0.14);

  --color-text: #f0eff4;
  --color-text-muted: #8a8898;
  --color-text-subtle: #5a5a6e;

  --color-accent: #c8b8ff;
  --color-accent-dim: rgba(200, 184, 255, 0.12);
  --color-accent-glow: rgba(200, 184, 255, 0.25);

  --color-gold: #e8d5a3;
  --color-gold-dim: rgba(232, 213, 163, 0.1);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --container: 1140px;
}

/* ============================================
   Reset & Base
   ============================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
}

/* ============================================
   Layout
   ============================================ */

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 120px 0;
}

.section-dark {
  background: var(--color-bg-2);
  position: relative;
}

.section-dark::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--color-border);
}

.section-dark::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--color-border);
}

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

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
  border: 1px solid rgba(200, 184, 255, 0.2);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 18px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #0a0a0b;
  box-shadow: 0 0 32px var(--color-accent-glow);
}

.btn-primary:hover {
  background: #d9ccff;
  transform: translateY(-1px);
  box-shadow: 0 0 48px var(--color-accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-border-hover);
  background: rgba(255, 255, 255, 0.04);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ============================================
   Navigation
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: all var(--transition);
}

.nav.scrolled {
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-links a:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-cta {
  background: var(--color-accent) !important;
  color: #0a0a0b !important;
  font-weight: 500 !important;
  padding: 8px 18px !important;
}

.nav-cta:hover {
  background: #d9ccff !important;
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 16px 32px 24px;
  border-top: 1px solid var(--color-border);
  background: rgba(10, 10, 11, 0.95);
  backdrop-filter: blur(20px);
}

.nav-mobile a {
  padding: 14px 0;
  font-size: 16px;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition);
}

.nav-mobile a:last-child {
  border-bottom: none;
}

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

.nav-mobile.open {
  display: flex;
}

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

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.35;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #7c5cbf 0%, transparent 70%);
  top: -200px;
  right: -100px;
  animation: float 8s ease-in-out infinite;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #3d2f7a 0%, transparent 70%);
  bottom: 0;
  left: -100px;
  animation: float 10s ease-in-out infinite reverse;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #c8b8ff 0%, transparent 70%);
  top: 40%;
  left: 40%;
  opacity: 0.12;
  animation: float 12s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  background: var(--color-gold-dim);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
  border: 1px solid rgba(232, 213, 163, 0.2);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}

.hero-title-accent {
  background: linear-gradient(135deg, #c8b8ff 0%, #a78bfa 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 44px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  transform: rotate(0deg);
}

.hero-scroll-line {
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-text-subtle), transparent);
}

/* ============================================
   Apps
   ============================================ */

.apps-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Featured app card */
.app-card-featured {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: grid;
  grid-template-columns: 1fr 380px;
  overflow: hidden;
  transition: border-color var(--transition);
}

.app-card-featured:hover {
  border-color: var(--color-border-hover);
}

.app-card-content {
  padding: 52px 56px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.app-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold);
  background: var(--color-gold-dim);
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 24px;
  border: 1px solid rgba(232, 213, 163, 0.2);
}

.app-name {
  font-family: var(--font-serif);
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.1;
}

.app-tagline {
  font-size: 17px;
  font-weight: 400;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.app-desc {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 440px;
}

.app-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* App mockup visual */
.app-card-visual {
  background: linear-gradient(135deg, #1a1625 0%, #12101a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.app-card-visual::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(200, 184, 255, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.app-mockup {
  width: 180px;
  position: relative;
  z-index: 1;
}

.app-mockup-screen {
  background: #0e0c14;
  border-radius: 28px;
  border: 1.5px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
  box-shadow:
    0 0 0 6px rgba(255, 255, 255, 0.04),
    0 32px 64px rgba(0, 0, 0, 0.6);
  padding: 14px 16px 20px;
  aspect-ratio: 9/19.5;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mockup-status-bar {
  height: 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 6px;
  margin-bottom: 18px;
}

.mockup-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.mockup-line {
  height: 8px;
  background: rgba(200, 184, 255, 0.15);
  border-radius: 4px;
}

.mockup-line-title {
  height: 14px;
  background: rgba(200, 184, 255, 0.25);
  width: 70%;
}

.mockup-line-short {
  width: 50%;
}

.mockup-card-placeholder {
  height: 80px;
  background: linear-gradient(135deg, rgba(200, 184, 255, 0.1), rgba(200, 184, 255, 0.05));
  border-radius: 12px;
  border: 1px solid rgba(200, 184, 255, 0.1);
  margin: 6px 0;
}

/* Coming soon */
.apps-coming {
  display: grid;
  grid-template-columns: 1fr;
}

.coming-soon-card {
  background: var(--color-bg-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: 52px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
}

.coming-soon-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-subtle);
  margin-bottom: 4px;
}

.coming-soon-card h4 {
  font-size: 17px;
  font-weight: 500;
  color: var(--color-text);
}

.coming-soon-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  max-width: 340px;
  line-height: 1.65;
  margin-bottom: 8px;
}

/* Contact topics */
.contact-topics {
  margin-top: 20px;
  padding-top: 20px;
}

.contact-topic-title {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: 12px;
}

.contact-topic-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.topic-chip {
  font-size: 12px;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  padding: 5px 12px;
  border-radius: 100px;
}

/* ============================================
   About
   ============================================ */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: start;
}

.about-left .section-tag {
  text-align: left;
}

.about-left .section-title {
  text-align: left;
}

.about-text {
  font-size: 16px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-left .btn {
  margin-top: 16px;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.about-value {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}

.about-value:last-child {
  border-bottom: none;
}

.about-value-num {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  margin-top: 2px;
  min-width: 24px;
  opacity: 0.7;
}

.about-value h4 {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 6px;
}

.about-value p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ============================================
   Contact
   ============================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 80px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.contact-item {
  display: flex;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: center;
}

.contact-item:first-child {
  padding-top: 0;
}

.contact-item-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
  border: 1px solid rgba(200, 184, 255, 0.15);
}

.contact-item-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: 4px;
}

.contact-item-value {
  font-size: 15px;
  color: var(--color-text);
  font-weight: 400;
  transition: color var(--transition);
}

a.contact-item-value:hover {
  color: var(--color-accent);
}

/* Form */
.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group:last-of-type {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--color-text);
  transition: all var(--transition);
  outline: none;
  resize: vertical;
}

.form-group textarea {
  min-height: 120px;
  max-height: 320px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-subtle);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: rgba(200, 184, 255, 0.4);
  background: rgba(200, 184, 255, 0.04);
  box-shadow: 0 0 0 3px rgba(200, 184, 255, 0.08);
}

.form-feedback {
  font-size: 14px;
  text-align: center;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-top: 14px;
  display: none;
}

.form-feedback:not(:empty) {
  display: block;
}

.form-feedback-success {
  background: rgba(134, 239, 172, 0.08);
  border: 1px solid rgba(134, 239, 172, 0.2);
  color: #86efac;
}

.form-feedback-error {
  background: rgba(252, 165, 165, 0.08);
  border: 1px solid rgba(252, 165, 165, 0.2);
  color: #fca5a5;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.form-notice {
  margin-top: 14px;
  font-size: 12px;
  color: var(--color-text-subtle);
  text-align: center;
  line-height: 1.5;
}

.form-notice a {
  color: var(--color-accent);
  opacity: 0.8;
  transition: opacity var(--transition);
}

.form-notice a:hover {
  opacity: 1;
}

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

.footer {
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-border);
  padding: 72px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-text-subtle);
  line-height: 1.65;
}

.footer-col-title {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: 18px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 14px;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--color-text);
}

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

/* ============================================
   Legal Pages
   ============================================ */

.legal-page {
  padding: 120px 0 80px;
  min-height: 100vh;
}

.legal-page .container {
  max-width: 760px;
}

.legal-header {
  margin-bottom: 60px;
}

.legal-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 500;
  margin-bottom: 12px;
}

.legal-header .legal-date {
  font-size: 14px;
  color: var(--color-text-subtle);
}

.legal-content h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--color-text);
  margin: 44px 0 14px;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 14px;
}

.legal-content ul {
  margin: 0 0 14px 20px;
  list-style: disc;
}

.legal-content ul li {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 6px;
}

.legal-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  opacity: 0.85;
}

.legal-content a:hover {
  opacity: 1;
}

.legal-content strong {
  color: var(--color-text);
  font-weight: 500;
}

.legal-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
}

.legal-content th,
.legal-content td {
  padding: 12px 16px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--color-border);
}

.legal-content th {
  font-weight: 500;
  color: var(--color-text);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.legal-content td {
  color: var(--color-text-muted);
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 48px;
  transition: color var(--transition);
}

.legal-back:hover {
  color: var(--color-text);
}

/* ============================================
   Animations
   ============================================ */

.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

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

@media (max-width: 900px) {
  .app-card-featured {
    grid-template-columns: 1fr;
  }

  .app-card-visual {
    display: none;
  }

  .app-card-content {
    padding: 36px 32px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 64px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .coming-soon-card {
    padding: 40px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand {
    grid-column: span 2;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 20px;
  }

  .section {
    padding: 80px 0;
  }

  .nav-links {
    display: none;
  }

  .nav-burger {
    display: flex;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: span 1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .hero-scroll {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .contact-form {
    padding: 28px 20px;
  }
}