/* =============================================
   MAIN.CSS — Variables, Reset, Global
   ============================================= */

:root {
  --navy:        #0d1b2a;
  --navy-mid:    #1a2e42;
  --navy-light:  #243b55;
  --teal:        #0891b2;
  --teal-dark:   #0e7490;
  --teal-light:  #e0f7fa;
  --amber:       #d97706;
  --amber-light: #fef3c7;
  --text:        #1e2d3d;
  --text-mid:    #4a5e72;
  --text-muted:  #7e95a8;
  --bg:          #f0f4f8;
  --surface:     #ffffff;
  --border:      #dde4ed;
  --shadow-sm:   0 1px 3px rgba(13,27,42,.08), 0 1px 2px rgba(13,27,42,.05);
  --shadow-md:   0 4px 16px rgba(13,27,42,.10), 0 2px 4px rgba(13,27,42,.06);
  --shadow-lg:   0 10px 40px rgba(13,27,42,.14);
  --font-display: 'DM Serif Display', 'Noto Serif SC', serif;
  --font-body:    'DM Sans', 'Noto Serif SC', sans-serif;
  --font-serif:   'Noto Serif SC', serif;
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --ease:        cubic-bezier(.4, 0, .2, 1);
  --dur:         220ms;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

#app { display: flex; flex-direction: column; min-height: 100vh; }
#page-content { flex: 1; }

a { color: var(--teal); text-decoration: none; transition: color var(--dur) var(--ease); }
a:hover { color: var(--teal-dark); }
img { max-width: 100%; display: block; }

/* ─── Loading ─── */
.page-loading {
  display: flex; justify-content: center; align-items: center; min-height: 320px;
}
.spinner {
  display: inline-block; width: 40px; height: 40px;
  border: 3px solid var(--border); border-top-color: var(--teal);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Navbar ─── */
#site-header {
  background: var(--navy);
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,.25);
}
.navbar {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.navbar-logo {
  font-family: var(--font-display); font-size: 1.4rem;
  color: #fff; cursor: pointer; letter-spacing: .02em;
  user-select: none;
}
.navbar-logo .accent { color: var(--teal); font-style: italic; }
.navbar-breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: .85rem; color: rgba(255,255,255,.55);
}
.navbar-breadcrumb .sep { opacity: .35; }
.navbar-breadcrumb a {
  color: rgba(255,255,255,.72);
  transition: color var(--dur) var(--ease);
}
.navbar-breadcrumb a:hover { color: #fff; }
.navbar-breadcrumb .crumb-current { color: var(--teal); }

/* ─── Footer ─── */
#site-footer {
  background: var(--navy); color: rgba(255,255,255,.4);
  text-align: center; padding: 28px 24px;
  font-size: .82rem; line-height: 1.9; margin-top: auto;
}
#site-footer strong { color: rgba(255,255,255,.65); }

/* ─── Safe image wrapper ─── */
.safe-img-wrap {
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy-mid), var(--navy-light));
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%;
}
.safe-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: opacity var(--dur) var(--ease), transform .4s var(--ease);
}
.safe-img-wrap .img-placeholder {
  display: flex; flex-direction: column; align-items: center;
  gap: 8px; color: rgba(255,255,255,.3); font-size: .78rem;
  text-align: center; padding: 16px;
}
.safe-img-wrap .img-placeholder svg { opacity: .4; }

/* ─── Tags ─── */
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: .72rem; padding: 3px 10px; border-radius: 100px;
  background: var(--teal-light); color: var(--teal-dark);
  font-weight: 500; letter-spacing: .02em;
}

/* ─── Source badge ─── */
.source-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: .78rem; font-weight: 600; color: var(--amber);
  background: var(--amber-light); padding: 3px 10px;
  border-radius: 4px; letter-spacing: .02em;
}

/* ─── Buttons ─── */
.btn-back {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--radius-sm);
  background: transparent; border: 1.5px solid var(--border);
  color: var(--text-mid); cursor: pointer; font-family: var(--font-body);
  font-size: .85rem; transition: all var(--dur) var(--ease);
}
.btn-back:hover {
  background: var(--surface); border-color: var(--teal);
  color: var(--teal); box-shadow: var(--shadow-sm);
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: var(--radius-sm);
  background: var(--teal); color: #fff; border: none;
  cursor: pointer; font-family: var(--font-body); font-size: .9rem;
  font-weight: 500; transition: all var(--dur) var(--ease); text-decoration: none;
}
.btn-primary:hover {
  background: var(--teal-dark); color: #fff;
  box-shadow: var(--shadow-md); transform: translateY(-1px);
}
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: var(--radius-sm);
  background: transparent; color: var(--teal);
  border: 1.5px solid var(--teal); cursor: pointer;
  font-family: var(--font-body); font-size: .9rem;
  font-weight: 500; transition: all var(--dur) var(--ease); text-decoration: none;
}
.btn-outline:hover { background: var(--teal-light); box-shadow: var(--shadow-sm); }

/* ─── States ─── */
.state-empty {
  text-align: center; padding: 80px 24px; color: var(--text-muted);
}
.state-empty h3 { font-size: 1.1rem; margin-bottom: 8px; color: var(--text-mid); }

/* ─── Container ─── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ─── Animations ─── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeInUp .4s var(--ease) both; }

@media (max-width: 768px) {
  .navbar { padding: 0 16px; }
  .container { padding: 0 16px; }
  .navbar-breadcrumb { display: none; }
}