/* =============================================================================
   ALEXANDRE LIGNOS — GLOBAL CSS
   Design tokens, base styles, navigation, mobile overlay, footer, reveal
   ============================================================================= */

/* =============================================
   DESIGN TOKENS
============================================= */
:root {
  --blue: #0E4194;
  --blue-dark: #061D42;
  --blue-mid: #154DA3;
  --blue-light: #E8EEF9;
  --orange: #F57F20;
  --orange-light: #FF9D4D;
  --orange-pale: rgba(245, 127, 32, 0.08);
  --bg-raw: 255, 255, 255;

  --bg: #FFFFFF;
  --bg-alt: #F8FAFC;
  --bg-card: #FFFFFF;
  --text: #0F172A;
  --text-soft: #475569;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  --text3: #64748B;
  --border: #E2E8F0;
  --border-soft: rgba(14, 65, 148, 0.08);

  --nav-bg: rgba(255, 255, 255, 0.85);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);

  --shadow-premium: 0 20px 50px rgba(14, 65, 148, 0.1);
  --radius: 16px;
  --radius-sm: 12px;
  --radius-lg: 24px;

  --speed: 0.4s;
  --ease: cubic-bezier(0.2, 0, 0, 1);
}

[data-theme="dark"] {
  --bg: #050505;
  --bg-alt: #0A0A0A;
  --bg-card: #111111;
  --text: #F8FAFC;
  --text-soft: #CBD5E1;
  --text-muted: #64748B;
  --text-dim: #94A3B8;
  --text3: #94A3B8;
  --border: #1F1F23;
  --border-soft: rgba(255, 255, 255, 0.05);

  --nav-bg: rgba(5, 5, 5, 0.85);
  --glass-bg: rgba(0, 0, 0, 0.3);
  --glass-border: rgba(255, 255, 255, 0.08);

  --shadow-premium: 0 20px 50px rgba(0, 0, 0, 0.5);

  --blue: #3B82F6;
  --blue-mid: #60A5FA;
}

/* =============================================
   BASE RESET
============================================= */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
  font-weight: 300;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  transition: background var(--speed) var(--ease), color var(--speed) var(--ease);
  position: relative;
}

/* Noise texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='filter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23filter)'/%3E%3C/svg%3E");
  opacity: 0.015;
  pointer-events: none;
  z-index: 9999;
}

[data-theme="dark"] body::before {
  opacity: 0.04;
}

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

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

ul {
  list-style: none;
}

.serif {
  font-family: 'Cormorant Garamond', Georgia, serif;
}

/* =============================================
   NAVIGATION
============================================= */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  height: 90px;
  display: flex;
  align-items: center;
  padding: 0 40px;
  transition: all 0.5s var(--ease);
  background: linear-gradient(180deg, rgba(var(--bg-raw), 0.8) 0%, transparent 100%);
}

[data-theme="dark"] .nav {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.6) 0%, transparent 100%);
}

.nav.scrolled {
  height: 72px;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--shadow-premium);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.nav__logo-accent {
  width: 2px;
  height: 30px;
  background: var(--orange);
  flex-shrink: 0;
  transition: background var(--speed) var(--ease);
}

.nav__logo-block {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav__logo-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  line-height: 1;
  transition: color var(--speed) var(--ease);
}

.nav__logo-role {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
  line-height: 1.2;
  transition: color var(--speed) var(--ease);
  opacity: 0.9;
}

/* Nav links */
.nav__links {
  display: none;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 768px) {
  .nav__links {
    display: flex;
  }
}

.nav__links > li {
  position: relative;
}

.nav__links a {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text3);
  transition: color var(--speed) var(--ease);
}

.nav__links a:hover {
  color: var(--orange);
}

/* Dropdown */
.nav__dropdown > a::after {
  content: ' ▾';
  font-size: 0.6rem;
  opacity: 0.6;
}

.nav__submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-premium);
  padding: 16px 0 8px; /* top padding bridges the gap */
  min-width: 260px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  transform: translateX(-50%) translateY(-8px);
  z-index: 10;
}

.nav__dropdown:hover .nav__submenu {
  opacity: 1;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

.nav__submenu a {
  display: block;
  padding: 10px 20px;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}

.nav__submenu a:hover {
  background: var(--bg-alt);
  color: var(--orange);
}

/* Controls */
.nav__controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  cursor: pointer;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-soft);
  transition: all var(--speed) var(--ease);
  box-shadow: var(--shadow-premium);
}

.theme-btn:hover {
  border-color: var(--orange);
  color: var(--orange);
  transform: translateY(-1px);
}

.theme-btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.theme-btn .i-sun {
  display: none;
}

.theme-btn .i-moon {
  display: block;
}

[data-theme="dark"] .theme-btn .i-sun {
  display: block;
}

[data-theme="dark"] .theme-btn .i-moon {
  display: none;
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: all var(--speed) var(--ease);
}

/* =============================================
   MOBILE OVERLAY
============================================= */
.mob-overlay {
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: 1001;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
  overflow-y: auto;
  padding: 64px 24px 32px;
}

.mob-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mob-overlay a {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2rem;
  font-weight: 300;
  color: var(--text);
  letter-spacing: 0.05em;
  transition: color var(--speed) var(--ease);
}

.mob-overlay a:hover {
  color: var(--orange);
}

.mob-close {
  position: fixed;
  top: 16px;
  right: 20px;
  z-index: 1002;
  background: none;
  border: none;
  font-size: 2.4rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  font-weight: 300;
  padding: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}

.mob-overlay.open .mob-close {
  opacity: 1;
  pointer-events: auto;
}

.mob-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.mob-item__toggle {
  -webkit-appearance: none;
  appearance: none;
  font-family: 'Cormorant Garamond', serif;
  font-size: 2rem;
  font-weight: 300;
  color: var(--text);
  letter-spacing: 0.05em;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  transition: color var(--speed) var(--ease);
}

.mob-item__toggle svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.35s var(--ease);
}

.mob-item__toggle:hover {
  color: var(--orange);
}

.mob-item--open .mob-item__toggle {
  color: var(--orange);
}

.mob-item--open .mob-item__toggle svg {
  transform: rotate(180deg);
}

.mob-item__sub {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease), margin-top 0.35s var(--ease);
}

.mob-item--open .mob-item__sub {
  max-height: 400px;
  margin-top: 1.2rem;
}

.mob-item__sub a {
  font-size: 1.25rem !important;
  color: var(--text-soft) !important;
}

.mob-item__sub a:hover {
  color: var(--orange) !important;
}

/* =============================================
   FOOTER
============================================= */
.footer {
  background: var(--text);
  padding: 48px 32px;
  transition: background var(--speed) var(--ease);
}

[data-theme="dark"] .footer {
  background: #0A0A0A;
}

.footer__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

@media (min-width: 600px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__brand {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.05em;
}

[data-theme="dark"] .footer__brand {
  color: var(--text);
}

.footer__copy {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.35);
  transition: color var(--speed) var(--ease);
}

[data-theme="dark"] .footer__copy {
  color: var(--text3);
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  transition: color var(--speed) var(--ease);
}

[data-theme="dark"] .footer__links a {
  color: var(--text3);
}

.footer__links a:hover {
  color: var(--orange);
}

/* =============================================
   SCROLL REVEAL
============================================= */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }