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

:root {
  --primary: #05184b;       /* MedScreen navy */
  --primary-light: #0e81cc; /* MedScreen blue */
  --bg: #f4f4f4;
  --card-bg: #ffffff;
  --text: #1e1e1e;
  --text-muted: #666;
  --border: #dde;
  --danger: #c0392b;
  --success: #27ae60;
  --radius: 6px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* === Header === */
header {
  background: #fff;
  border-bottom: 3px solid var(--primary);
  padding: 0 1.5rem;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 40px;
  width: auto;
}

.logo-text {
  margin-left: 0.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.2;
}

nav { display: flex; align-items: center; gap: 1rem; }
nav a {
  color: var(--primary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s;
}
nav a:hover {
  background: var(--primary);
  color: #fff;
}

.nav-link-btn {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s;
}
.nav-link-btn:hover {
  background: var(--primary);
  color: #fff;
}

/* === Main & Footer === */
main { flex: 1; padding: 2rem 1.5rem; max-width: 1100px; margin: 0 auto; width: 100%; }

footer {
  background: var(--primary);
  text-align: center;
  padding: 1.25rem;
  color: rgba(255,255,255,0.7);
  font-size: 0.8rem;
}

footer a { color: var(--primary-light); text-decoration: none; }

/* === Center card (PIN entry, login, expired) === */
.center-card {
  max-width: 420px;
  margin: 3rem auto;
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  box-shadow: 0 2px 16px rgba(5,24,75,0.08);
  text-align: center;
  border-top: 4px solid var(--primary-light);
}

.center-card h1 {
  margin-bottom: 0.75rem;
  font-size: 1.5rem;
  color: var(--primary);
}

.center-card p { margin-bottom: 1.5rem; color: var(--text-muted); }

.center-card form { display: flex; flex-direction: column; gap: 1rem; }
.center-card label { text-align: left; font-size: 0.9rem; font-weight: 600; color: var(--primary); }

/* === PIN input === */
.pin-form { display: flex; flex-direction: column; align-items: center; gap: 1rem; }

.pin-input {
  font-size: 2.5rem;
  text-align: center;
  letter-spacing: 0.5em;
  width: 220px;
  padding: 0.5rem;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-family: monospace;
  color: var(--primary);
}

.pin-input:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(14,129,204,0.15);
}

/* === Inputs === */
.input {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
  width: 100%;
}

.input:focus { outline: none; border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(14,129,204,0.12); }
.input-sm { width: 100px; }
.input-wide { flex: 1; min-width: 200px; }

/* === Buttons === */
.btn {
  padding: 0.6rem 1.4rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  font-family: inherit;
  font-weight: 600;
  background: var(--primary);
  color: #fff;
  transition: background 0.2s;
}

.btn:hover { background: var(--primary-light); }
.btn-primary { background: var(--primary-light); }
.btn-primary:hover { background: var(--primary); }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #e74c3c; }

a.btn { text-decoration: none; display: inline-block; }

/* === Alerts === */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.alert-error { background: #fdecea; color: var(--danger); border: 1px solid #f5c6cb; }
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }

/* === Tables === */
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 1px 8px rgba(5,24,75,0.06);
  margin-bottom: 1.5rem;
}

th, td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(14,129,204,0.03); }

/* === Admin layout === */
.admin-container section { margin-bottom: 2rem; }
.admin-container h1 { margin-bottom: 1.25rem; color: var(--primary); }
.admin-container h2 { margin-bottom: 0.75rem; font-size: 1.15rem; color: var(--primary); }

.inline-form { display: inline; }
.inline-channel-form { display: flex; gap: 0.5rem; align-items: center; }

.channel-badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  min-width: 90px;
  text-align: center;
}

.generate-pin-form {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
  flex-wrap: wrap;
  background: var(--card-bg);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  box-shadow: 0 1px 8px rgba(5,24,75,0.06);
  border-left: 4px solid var(--primary-light);
}

.generate-pin-form label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
}

/* === Stream page === */
.stream-container { max-width: 100%; }

.stream-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.stream-header h2 { font-size: 1.25rem; color: var(--primary); }
.stream-meta { color: var(--text-muted); font-size: 0.85rem; }

.stream-notice {
  background: #e8f4fd;
  color: var(--primary);
  border: 1px solid #b8ddf0;
  border-radius: var(--radius);
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.iframe-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(5,24,75,0.12);
}

.iframe-wrapper iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
}

/* === Responsive === */
@media (max-width: 600px) {
  .header-inner { height: auto; padding: 0.75rem 0; flex-wrap: wrap; gap: 0.5rem; }
  .logo img { height: 32px; }
  .inline-channel-form { flex-direction: column; }
  .input-sm { width: 100%; }
  .generate-pin-form { flex-direction: column; }
}