/* ---------- Base / Theme ---------- */
:root {
  /* Palette */
  --bg: #0f1115;
  --bg-2: #1a1d23;
  --text: #f5f7fa;
  --muted: #aab4c5;
  --border: #262b35;
  --brand: #007bff;
  --brand-2: #0095ff;
  --btn-primary: #007bff;
  --btn-primary-hover: #0095ff;
  --success: #27ae60;
  --danger: #ff4d4d;
  --warning: #f39c12;

  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  --container: 1200px;
  --font: "Poppins", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
  background: none;
}

body {
  font-family: var(--font);
  font-size: 18px;
  margin: 0;
  padding: 0;
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, var(--bg) 0%, var(--bg-2) 100%) fixed;
  background-attachment: fixed;
}

html,
body {
  overflow-x: hidden;
}

body.home .app {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto;
  gap: 20px;
  margin-top: 40px;
  align-items: stretch;
}

body.gallery .app {
  display: block;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Utilities */
.container {
  width: 85%;
  margin-inline: auto;
  padding-inline: 16px;
}
.muted {
  color: var(--muted);
  font-size: 0.95rem;
}
.label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 1.05rem;
}
.sr-only {
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(
    180deg,
    rgba(17, 17, 17, 0.85),
    rgba(17, 17, 17, 0.6)
  );
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}
.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 6px;
}
.brand-name {
  font-weight: 900;
  letter-spacing: 0.3px;
  align-items: left;
}

.primary-nav {
  margin-left: auto;
  display: flex;
  gap: 12px;
}
.nav-link {
  padding: 10px 12px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  border: 1px solid transparent;
}
.nav-link:hover {
  border-color: var(--border);
  background: #0f1420;
}

.nav-tools {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-burger {
  display: none;
  background: transparent;
  border: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
}
.nav-burger span {
  display: block;
  height: 2px;
  background: var(--text);
  margin: 6px 8px;
}

/* === Burger dropdown === */
.menu-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(2px);
  z-index: 98;
}

.mobile-menu {
  position: fixed;
  right: 12px;
  top: calc(var(--header-height, 64px) + 8px);
  width: min(260px, 86vw);
  background: rgba(20, 20, 20, 0.85);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border);
  box-shadow:
    0 12px 30px rgba(0, 0, 0, 0.45),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  border-radius: 14px;
  padding: 8px;
  z-index: 99;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.mobile-menu.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu-inner {
  display: grid;
  gap: 4px;
}
.menu-item {
  display: block;
  padding: 12px 14px;
  border-radius: 10px;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}
.menu-item:hover {
  background: rgba(255, 255, 255, 0.12);
}
.menu-sep {
  border: 0;
  height: 1px;
  background: var(--border);
  margin: 6px 0;
}

@media (min-width: 981px) {
  .mobile-menu,
  .menu-backdrop {
    display: none !important;
  }
}

/* Language Selector */
#lang-select {
  background: #222;
  color: #ffffff;
  font-weight: 600;
  font-size: 1rem;
  padding: 8px 12px;
  border-radius: 12px;
  border: 2px solid var(--brand);
  box-shadow: 0 2px 8px #0006;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 10px 7px;
  min-width: 150px;
}
#lang-select:hover,
#lang-select:focus {
  background: #1a1a1a;
  border-color: var(--brand);
  border: 2px solid var(--brand) !important;
  box-shadow: 0 0 10px #00eaff88;
  outline: none;
}