/* ============================================================
   styles/main.css  — Shared styles for index.html & portfolio.html
   ============================================================ */

/* ─── TOKENS ─── */
:root {
  --gold:         #bd8331;
  --gold-light:   #d4a055;
  --gold-dim:     rgba(189, 131, 49, 0.12);
  --gold-border:  rgba(189, 131, 49, 0.25);

  --bg:       #fafaf8;
  --bg-alt:   #f2f0eb;
  --surface:  #ffffff;
  --border:   rgba(0, 0, 0, 0.08);

  --ink:   #1a1814;
  --ink-2: #4a4540;
  --ink-3: #8a857d;

  --nav-h:    68px;
  --radius:   14px;
  --radius-lg:24px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', sans-serif;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
}

[data-theme="dark"] {
  --bg:      #111110;
  --bg-alt:  #1a1917;
  --surface: #1e1d1b;
  --border:  rgba(255, 255, 255, 0.07);

  --ink:   #f0ede8;
  --ink-2: #b8b3aa;
  --ink-3: #6a6560;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.30);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.35);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.40);
}

/* ─── RESET ─── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
  overflow-x: hidden;
}

img  { max-width: 100%; height: auto; display: block; }
a    { text-decoration: none; color: inherit; }
ul   { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-body); }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ─── PRELOADER ─── */
#preloader {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 1rem;
  z-index: 9999;
  transition: opacity 0.6s var(--ease), visibility 0.6s var(--ease);
}
#preloader.done { opacity: 0; visibility: hidden; pointer-events: none; }
#preloader p { font-size: 0.8rem; color: var(--ink-3); letter-spacing: 0.05em; }

.pre-ring {
  width: 44px; height: 44px;
  border: 2.5px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── HEADER ─── */
.header {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(250, 250, 248, 0.9);
  backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease);
}
[data-theme="dark"] .header { background: rgba(17, 17, 16, 0.9); }

.nav {
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: -0.01em;
}

.nav__links {
  display: flex; align-items: center; gap: 2.5rem;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-2);
  letter-spacing: 0.02em;
  position: relative;
  transition: color 0.25s;
}
.nav__link::after {
  content: '';
  position: absolute; bottom: -4px; left: 0; right: 0;
  height: 1.5px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav__link:hover,
.nav__link.active { color: var(--gold); }
.nav__link:hover::after,
.nav__link.active::after { transform: scaleX(1); }

.nav__actions { display: flex; align-items: center; gap: 1rem; }

/* ─── THEME BUTTON ─── */
.theme-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--ink-2);
  font-size: 0.95rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.25s var(--ease);
}
.theme-btn:hover { background: var(--gold); color: #fff; border-color: var(--gold); }

/* ─── HAMBURGER ─── */
.hamburger {
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  width: 38px; height: 38px;
  border-radius: 8px; padding: 8px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
}
.hamburger span {
  display: block; height: 1.5px; width: 100%;
  background: var(--ink); border-radius: 2px;
  transition: all 0.3s var(--ease);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: translateX(-8px); }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(4.5px, -4.5px); }

/* ─── MOBILE DRAWER ─── */
.mobile-overlay {
  position: fixed; inset: 0; top: var(--nav-h);
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.mobile-overlay.open { opacity: 1; visibility: visible; }

.mobile-drawer {
  position: fixed; top: var(--nav-h); right: 0; bottom: 0;
  width: min(300px, 88vw);
  background: var(--surface);
  border-left: 1px solid var(--border);
  padding: 2rem;
  z-index: 999;
  display: flex; flex-direction: column; gap: 0.25rem;
  transform: translateX(100%);
  transition: transform 0.35s var(--ease);
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }

.drawer-link {
  display: block;
  padding: 0.9rem 0;
  font-size: 1.05rem; font-weight: 500;
  color: var(--ink-2);
  border-bottom: 1px solid var(--border);
  transition: color 0.2s, padding-left 0.2s;
}
.drawer-link:hover,
.drawer-link.active { color: var(--gold); padding-left: 0.4rem; }

/* ─── BUTTONS ─── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.78rem 1.6rem;
  background: var(--gold);
  color: #fff;
  border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500;
  letter-spacing: 0.02em;
  transition: all 0.25s var(--ease);
  box-shadow: 0 2px 12px rgba(189, 131, 49, 0.3);
}
.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(189, 131, 49, 0.35);
}

.btn-outline {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  background: transparent;
  color: var(--ink-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500;
  transition: all 0.25s var(--ease);
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }

.btn-white {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  background: #fff;
  color: var(--gold);
  border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 600;
  transition: all 0.25s var(--ease);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2); }

/* ─── SOCIAL ICON ─── */
.social-icon {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--ink-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem;
  transition: all 0.25s var(--ease);
}
.social-icon:hover { background: var(--gold); color: #fff; border-color: var(--gold); transform: translateY(-2px); }

/* ─── SECTION SHARED ─── */
.section { padding: 6rem 0; }
.section--alt { background: var(--bg-alt); }

.section__label {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}
.section__label-line {
  display: block; width: 24px; height: 1px;
  background: var(--gold);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

/* ─── FOOTER ─── */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}
.footer__inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}
.footer__logo {
  font-family: var(--font-display);
  font-size: 1.15rem; font-weight: 500;
  color: var(--gold);
}
.footer__socials { display: flex; gap: 0.6rem; }
.footer__copy {
  text-align: center;
  font-size: 0.8rem;
  color: var(--ink-3);
}
.footer__link { color: var(--gold); }

/* ─── SCROLL UP ─── */
.scrollup {
  position: fixed;
  right: 1.5rem; bottom: -80px;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--gold); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  box-shadow: var(--shadow-md);
  z-index: 100;
  transition: bottom 0.35s var(--ease), transform 0.2s;
}
.scrollup.show { bottom: 2rem; }
.scrollup:hover { transform: translateY(-3px); }

/* ─── REVEAL ANIMATIONS ─── */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

.reveal-left {
  opacity: 0; transform: translateX(-30px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0; transform: translateX(30px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

.stagger > * {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.stagger.visible > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0.00s; }
.stagger.visible > *:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.10s; }
.stagger.visible > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.20s; }
.stagger.visible > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.30s; }
.stagger.visible > *:nth-child(5) { opacity: 1; transform: none; transition-delay: 0.40s; }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .hamburger  { display: flex; }
}

@media (max-width: 560px) {
  :root { --nav-h: 60px; }
  .section { padding: 4rem 0; }
  .scrollup { right: 1rem; }
}