/* ARBN 중독회복방송 - Main stylesheet */
/* Internet broadcasting station theme — dark hero + teal channels */
:root {
  --c-primary:        #00796b;
  --c-primary-dark:   #004d40;
  --c-primary-light:  #00a896;
  --c-accent:         #00695c;
  --c-warm:           #b9915c;
  --c-on-air:         #e53935;     /* live/featured indicator */
  --c-text:           #2d3748;
  --c-text-soft:      #555;
  --c-text-mute:      #777;
  --c-bg:             #f4f7f6;
  --c-bg-soft:        #e3f2fd;
  --c-bg-dark:        #0f2027;     /* broadcasting hero */
  --c-bg-dark-2:      #203a43;
  --c-surface:        #ffffff;
  --c-surface-warm:   #fef9f0;
  --c-surface-dark:   #1a2b32;
  --c-border:         #e2e8f0;
  --c-danger:         #e53e3e;
  --c-success:        #38a169;
  --c-warning:        #d69e2e;

  --shadow-sm:        0 1px 3px rgba(0,0,0,0.06);
  --shadow:           0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg:        0 4px 16px rgba(0,0,0,0.1);
  --shadow-hover:     0 6px 24px rgba(0,0,0,0.15);

  --radius-sm:        6px;
  --radius:           10px;
  --radius-lg:        14px;

  --tx-base:          16px;
  --tx-sm:            0.875rem;
  --tx-lg:            1.125rem;

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem;    --space-5: 1.5rem; --space-6: 2rem;
  --space-7: 2.5rem;  --space-8: 3rem;

  --transition: 0.2s ease;
}

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

html { font-size: var(--tx-base); }
body {
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-bg-soft) 100%);
  color: var(--c-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--c-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-primary-dark); }

img { max-width: 100%; height: auto; }

/* === Brand header (site title bar) === */
.site-header {
  background: linear-gradient(135deg, var(--c-primary-dark) 0%, var(--c-primary) 100%);
  color: white;
  padding: var(--space-7) var(--space-4);
  text-align: center;
}
.site-header h1 { font-size: clamp(1.6rem, 4vw, 2.5rem); font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.site-header p { margin-top: var(--space-3); font-size: clamp(0.95rem, 2vw, 1.1rem); line-height: 1.7; opacity: 0.95; }

/* === Navbar === */
.navbar {
  background: var(--c-primary);
  padding: var(--space-3) var(--space-5);
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow);
}
.navbar-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap;
}
.navbar .nav-links {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: var(--space-5); font-weight: 600;
}
.navbar .nav-links a {
  color: white; padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm); transition: background var(--transition);
}
.navbar .nav-links a:hover { background: rgba(255,255,255,0.15); color: white; }
.navbar .nav-links a.admin-link { color: #ffeb3b; }
.navbar .nav-links a.admin-link:hover { background: rgba(255,235,59,0.2); }
.navbar .visitor-counter {
  color: white; font-size: var(--tx-sm); font-weight: 600;
  padding: var(--space-1) var(--space-3); background: rgba(255,255,255,0.12); border-radius: 999px;
}

.hamburger {
  display: none; cursor: pointer; background: none; border: 0; padding: var(--space-2);
}
.hamburger span {
  display: block; width: 24px; height: 3px; background: white;
  margin: 4px 0; transition: all var(--transition); border-radius: 2px;
}

@media (max-width: 768px) {
  .hamburger { display: block; }
  .navbar-inner { position: relative; }
  .navbar .nav-links {
    display: none; flex-direction: column; align-items: stretch;
    width: 100%; gap: var(--space-1); margin-top: var(--space-3);
  }
  .navbar .nav-links a { padding: var(--space-3) var(--space-4); }
  .navbar.is-open .nav-links { display: flex; }
  .navbar.is-open .hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .navbar.is-open .hamburger span:nth-child(2) { opacity: 0; }
  .navbar.is-open .hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* === Layout === */
main { flex: 1; }
.container { max-width: 1200px; margin: 0 auto; padding: var(--space-6) var(--space-4); }
.container-narrow { max-width: 900px; margin: 0 auto; padding: var(--space-6) var(--space-4); }

/* === Section === */
.section { padding: var(--space-8) var(--space-4); }
.section-title { color: var(--c-accent); font-weight: 700; text-align: center; margin-bottom: var(--space-6); }
.section-title h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin: 0; }
.section-title p { color: var(--c-text-soft); margin-top: var(--space-2); font-weight: 400; }

/* === Card / video item === */
.card {
  background: var(--c-surface); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: var(--space-5);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }

.video-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5); max-width: 1200px; margin: 0 auto;
}
.video-item {
  background: var(--c-surface); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: transform var(--transition), box-shadow var(--transition);
  display: flex; flex-direction: column;
}
.video-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.video-thumb {
  position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;
  background: #000;
}
.video-thumb iframe, .video-thumb img {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0;
}
.video-item h3 { margin: var(--space-4); color: var(--c-accent); font-size: 1.05rem; line-height: 1.5; font-weight: 600; }
.video-item .meta { margin: 0 var(--space-4) var(--space-4); color: var(--c-text-mute); font-size: var(--tx-sm); }
.video-item .badge {
  display: inline-block; background: var(--c-primary-light); color: white;
  padding: 2px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 600;
  margin: var(--space-3) var(--space-4) 0;
}

/* === Hero video === */
.hero-video {
  background: var(--c-surface);
  padding: var(--space-8) var(--space-4);
  text-align: center;
}
.hero-video h2 { font-size: clamp(1.5rem, 3vw, 2rem); color: var(--c-primary-dark); font-weight: 700; margin-bottom: var(--space-2); }
.hero-video .video-frame {
  position: relative; padding-bottom: 56.25%; height: 0; max-width: 900px; margin: var(--space-6) auto 0;
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg);
}
.hero-video .video-frame iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }

/* === Buttons === */
.btn {
  display: inline-block; padding: var(--space-3) var(--space-6);
  background: var(--c-primary); color: white !important;
  border: 0; border-radius: var(--radius-sm); font-weight: 700;
  cursor: pointer; transition: background var(--transition), transform var(--transition);
  text-decoration: none;
}
.btn:hover { background: var(--c-primary-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; border: 2px solid var(--c-primary); color: var(--c-primary) !important; }
.btn-outline:hover { background: var(--c-primary); color: white !important; }
.btn-warm { background: var(--c-warm); }
.btn-warm:hover { background: #9c7a45; }
.btn-danger { background: var(--c-danger); }
.btn-block { display: block; width: 100%; text-align: center; }

/* === Programs row === */
.programs {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5); max-width: 1200px; margin: 0 auto;
}
.program {
  background: var(--c-surface); border-radius: var(--radius);
  padding: var(--space-6); box-shadow: var(--shadow); text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.program:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.program h3 { color: var(--c-accent); font-weight: 700; margin-bottom: var(--space-3); font-size: 1.15rem; }
.program p { color: var(--c-text-soft); line-height: 1.7; margin-bottom: var(--space-4); }

/* === Forms === */
.form-group { margin-bottom: var(--space-4); }
.form-label { display: block; margin-bottom: var(--space-2); font-weight: 600; color: var(--c-text); }
.form-control {
  width: 100%; padding: var(--space-3) var(--space-4);
  border: 1px solid var(--c-border); border-radius: var(--radius-sm);
  font-size: 1rem; font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  outline: 0; border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(0,121,107,0.15);
}
textarea.form-control { min-height: 120px; resize: vertical; }

/* === Tables (board lists) === */
.list-table { width: 100%; border-collapse: collapse; background: var(--c-surface); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.list-table th, .list-table td { padding: var(--space-3) var(--space-4); text-align: left; border-bottom: 1px solid var(--c-border); }
.list-table th { background: var(--c-bg); font-weight: 600; color: var(--c-text); }
.list-table tbody tr { transition: background var(--transition); }
.list-table tbody tr:hover { background: var(--c-bg); }
.list-table .num { text-align: center; color: var(--c-text-mute); width: 60px; }
.list-table .date { color: var(--c-text-mute); font-size: var(--tx-sm); width: 110px; white-space: nowrap; }

/* === Pagination === */
.pagination { display: flex; justify-content: center; gap: var(--space-2); margin: var(--space-6) 0; flex-wrap: wrap; }
.pagination a, .pagination span {
  display: inline-block; padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm); border: 1px solid var(--c-border);
  background: var(--c-surface); color: var(--c-text);
  text-decoration: none; transition: all var(--transition);
}
.pagination a:hover { background: var(--c-primary); color: white; border-color: var(--c-primary); }
.pagination .active { background: var(--c-primary); color: white; border-color: var(--c-primary); }

/* === Alerts === */
.alert {
  padding: var(--space-4); border-radius: var(--radius-sm); margin-bottom: var(--space-4);
  border-left: 4px solid;
}
.alert-success { background: #e6fffa; border-color: var(--c-success); color: #1a4731; }
.alert-error   { background: #fff5f5; border-color: var(--c-danger);  color: #742a2a; }
.alert-warn    { background: #fffbeb; border-color: var(--c-warning); color: #744210; }
.alert-info    { background: #ebf8ff; border-color: var(--c-primary); color: #1a365d; }

/* === Footer === */
.site-footer {
  background: linear-gradient(180deg, var(--c-primary-dark) 0%, #00332b 100%);
  color: #b0bec5; padding: var(--space-7) var(--space-4) var(--space-5);
  font-size: var(--tx-sm);
}
.site-footer-grid {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-5); text-align: left;
}
.site-footer p { margin: var(--space-1) 0; line-height: 1.7; }
.site-footer strong { color: #e0f2f1; }
.site-footer-stats {
  text-align: center; margin-top: var(--space-5); padding-top: var(--space-4);
  border-top: 1px solid #006d60;
}
.site-footer-copy {
  text-align: center; margin-top: var(--space-4); color: #80cbc4; font-weight: 500;
}

/* === Utility === */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.text-center { text-align: center; }
.text-muted { color: var(--c-text-mute); }
.mt-3 { margin-top: var(--space-3); } .mt-4 { margin-top: var(--space-4); } .mt-5 { margin-top: var(--space-5); }
.mb-3 { margin-bottom: var(--space-3); } .mb-4 { margin-bottom: var(--space-4); } .mb-5 { margin-bottom: var(--space-5); }

/* === Broadcasting station hero === */
.broadcast-hero {
  position: relative;
  background:
    radial-gradient(ellipse at top, rgba(0,168,150,0.25), transparent 60%),
    linear-gradient(135deg, var(--c-bg-dark) 0%, var(--c-bg-dark-2) 100%);
  color: white;
  padding: var(--space-8) var(--space-4) var(--space-7);
  overflow: hidden;
}
.broadcast-hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 20% 30%, rgba(0,168,150,0.15), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(229,57,53,0.10), transparent 50%);
}
.broadcast-hero-inner { position: relative; max-width: 1200px; margin: 0 auto; }
.broadcast-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800;
  letter-spacing: -0.02em; margin: 0;
  background: linear-gradient(90deg, #fff 0%, #80cbc4 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.broadcast-hero .tagline {
  margin-top: var(--space-3); font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: #b2dfdb; line-height: 1.7; opacity: 0.95;
}

/* ON AIR pulsing badge */
.on-air {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 4px 12px 4px 10px; border-radius: 999px;
  background: rgba(229,57,53,0.15); border: 1px solid var(--c-on-air);
  color: var(--c-on-air); font-weight: 700; font-size: 0.8rem; letter-spacing: 0.05em;
  text-transform: uppercase;
}
.on-air::before {
  content: ''; width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-on-air); animation: pulse 1.6s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(229,57,53,0.7); }
  70%  { box-shadow: 0 0 0 10px rgba(229,57,53,0); }
  100% { box-shadow: 0 0 0 0 rgba(229,57,53,0); }
}

/* Featured video frame in hero */
.broadcast-hero .featured {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--space-6);
  margin-top: var(--space-6); align-items: center;
}
.broadcast-hero .featured-video {
  position: relative; padding-bottom: 56.25%; height: 0; border-radius: var(--radius);
  overflow: hidden; box-shadow: 0 12px 40px rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.1);
}
.broadcast-hero .featured-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.broadcast-hero .featured-meta h2 {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem); font-weight: 700; margin-bottom: var(--space-3);
}
.broadcast-hero .featured-meta .info {
  color: #b2dfdb; font-size: var(--tx-sm); line-height: 1.7;
}
.broadcast-hero .featured-meta .info span { color: white; font-weight: 600; }
@media (max-width: 900px) {
  .broadcast-hero .featured { grid-template-columns: 1fr; }
}

/* === Channel grid (broadcasting categories) === */
.channels {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5); max-width: 1200px; margin: 0 auto;
}
.channel-card {
  background: var(--c-surface); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex; flex-direction: column;
  text-decoration: none; color: inherit;
}
.channel-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: inherit; }
.channel-card .thumb {
  position: relative; padding-bottom: 56.25%; height: 0; background: #000; overflow: hidden;
}
.channel-card .thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.channel-card .thumb::after {
  content: '▶'; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.85); font-size: 3rem; text-shadow: 0 2px 12px rgba(0,0,0,0.6);
  opacity: 0; transition: opacity var(--transition);
}
.channel-card:hover .thumb::after { opacity: 1; }
.channel-card .body { padding: var(--space-4); flex: 1; display: flex; flex-direction: column; }
.channel-card .channel-name {
  font-size: 0.78rem; font-weight: 700; color: var(--c-primary);
  text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--space-2);
}
.channel-card h3 { color: var(--c-text); font-size: 1rem; line-height: 1.5; font-weight: 600; flex: 1; }
.channel-card .meta { margin-top: var(--space-3); color: var(--c-text-mute); font-size: 0.8rem; display: flex; gap: var(--space-3); }
.channel-card.empty { background: var(--c-bg); }
.channel-card.empty .thumb { background: linear-gradient(135deg, var(--c-bg) 0%, var(--c-bg-soft) 100%); }
.channel-card.empty .thumb::before {
  content: '📡'; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem; opacity: 0.3;
}

/* === Search bar in navbar === */
.nav-search {
  display: flex; align-items: center; background: rgba(255,255,255,0.18);
  border-radius: 999px; padding: 4px 4px 4px 16px; gap: var(--space-2);
}
.nav-search input {
  background: transparent; border: 0; outline: 0; color: white;
  font-size: 0.9rem; min-width: 160px; font-family: inherit;
}
.nav-search input::placeholder { color: rgba(255,255,255,0.7); }
.nav-search button {
  background: white; color: var(--c-primary); border: 0; cursor: pointer;
  width: 32px; height: 32px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  transition: background var(--transition);
  font-size: 0.95rem;
}
.nav-search button:hover { background: var(--c-warm); color: white; }
@media (max-width: 768px) {
  .nav-search { width: 100%; margin-top: var(--space-3); }
  .nav-search input { flex: 1; }
}

/* === Section heading with accent stripe === */
.section-heading {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-5); padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--c-border);
}
.section-heading::before {
  content: ''; width: 4px; height: 28px; background: var(--c-primary); border-radius: 2px;
}
.section-heading h2 { color: var(--c-accent); font-size: 1.4rem; font-weight: 700; margin: 0; flex: 1; }
.section-heading a { font-size: var(--tx-sm); color: var(--c-primary); font-weight: 600; }

/* Share buttons */
.share-row { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; }
.share-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--c-bg); color: var(--c-text-soft);
  text-decoration: none; transition: all var(--transition);
  font-size: 0.95rem; border: 1px solid var(--c-border);
}
.share-btn:hover { background: var(--c-primary); color: white; border-color: var(--c-primary); transform: translateY(-2px); }
.share-btn.kakao { background: #ffe812; color: #3c1e1e; border-color: #ffe812; }
.share-btn.kakao:hover { background: #ffdf00; color: #3c1e1e; }

/* === Mobile refinements === */
@media (max-width: 600px) {
  .container, .container-narrow, .section { padding-left: var(--space-3); padding-right: var(--space-3); }
  .video-grid, .programs, .channels { grid-template-columns: 1fr; }
  .list-table th, .list-table td { padding: var(--space-2) var(--space-3); font-size: var(--tx-sm); }
  .list-table .date { display: none; }
  .broadcast-hero { padding: var(--space-6) var(--space-3); }
}