/*
 * public.css — Login & Public Pages
 * examcmru | CMRU สีดำ + ทอง
 * ─────────────────────────────────────────────────
 */

/* ── Google Font fallback (loaded in <head>) ── */
:root {
  --cmru-black:   #1A1A1A;
  --cmru-gold:    #F5A623;
  --cmru-gold-lt: #FFD166;
  --cmru-gold-dk: #C8841A;
  --cmru-white:   #FFFFFF;
  --bg-body:      #F3F0E8;        /* warm cream */
  --card-shadow:  0 8px 32px rgba(0,0,0,.12);
  --radius-lg:    1rem;
  --radius-md:    .75rem;
  --transition:   .25s ease;
  --font:         'Prompt', 'Sarabun', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: var(--font);
  background: var(--bg-body);
  background-image:
    radial-gradient(ellipse at 20% 20%, rgba(245,166,35,.12) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 80%, rgba(26,26,26,.08)   0%, transparent 55%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cmru-black);
}

/* ── Login Card ── */
.login-wrapper { width: 100%; max-width: 440px; padding: 1rem; }

.login-card {
  background: var(--cmru-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  border: 1px solid rgba(245,166,35,.18);
}

/* ── Card Header ── */
.login-header {
  background: var(--cmru-black);
  background-image: linear-gradient(135deg, #1a1a1a 60%, #2d2d2d 100%);
  padding: 2.2rem 1.5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.login-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(245,166,35,.22) 0%, transparent 65%);
}

.login-logo {
  width: 64px; height: 64px;
  background: var(--cmru-gold);
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: .9rem;
  box-shadow: 0 4px 18px rgba(245,166,35,.4);
  position: relative;
  font-size: 1.8rem; color: var(--cmru-black);
}

.login-title {
  color: var(--cmru-white);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: .2rem;
  position: relative;
}

.login-subtitle {
  color: rgba(255,255,255,.55);
  font-size: .78rem;
  position: relative;
}

/* ── Card Body ── */
.login-body { padding: 2rem 1.8rem 1.5rem; }

/* ── Form ── */
.form-label-custom {
  font-size: .82rem;
  font-weight: 500;
  color: #444;
  margin-bottom: .35rem;
  display: block;
}

.input-group-custom {
  position: relative;
  margin-bottom: 1.1rem;
}

.input-icon {
  position: absolute;
  left: .9rem; top: 50%;
  transform: translateY(-50%);
  color: #aaa;
  font-size: 1rem;
  pointer-events: none;
  z-index: 2;
}

.form-control-custom {
  width: 100%;
  padding: .65rem 1rem .65rem 2.5rem;
  border: 1.5px solid #e0ddd4;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: .9rem;
  background: #fdfcf9;
  color: var(--cmru-black);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-control-custom:focus {
  border-color: var(--cmru-gold);
  box-shadow: 0 0 0 3px rgba(245,166,35,.18);
  background: #fff;
}

.btn-login {
  width: 100%;
  padding: .75rem;
  background: var(--cmru-black);
  background-image: linear-gradient(135deg, #1a1a1a 60%, #333 100%);
  color: var(--cmru-gold);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: .5px;
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  margin-top: .5rem;
}

.btn-login:hover {
  background: var(--cmru-gold-dk);
  background-image: linear-gradient(135deg, var(--cmru-gold-dk) 0%, var(--cmru-gold) 100%);
  color: var(--cmru-black);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(245,166,35,.35);
}

.btn-login:active { transform: translateY(0); }

/* ── Password Toggle ── */
.toggle-pass {
  position: absolute;
  right: .9rem; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  color: #aaa; cursor: pointer;
  font-size: 1rem;
  z-index: 2;
  transition: color var(--transition);
}
.toggle-pass:hover { color: var(--cmru-gold-dk); }

/* ── Card Footer ── */
.login-footer {
  border-top: 1px solid #f0ede5;
  padding: .8rem 1.8rem;
  background: #fdfcf9;
  text-align: center;
  font-size: .75rem;
  color: #999;
}

/* ── Flash Alert ── */
.flash-bar {
  position: fixed;
  top: 1.2rem; left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  min-width: 320px; max-width: 90vw;
  padding: .75rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: .87rem;
  font-family: var(--font);
  display: flex; align-items: center; gap: .6rem;
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
  animation: slideDown .3s ease;
}
.flash-bar.danger  { background: #fff0f0; color: #b91c1c; border-left: 4px solid #ef4444; }
.flash-bar.success { background: #f0fdf4; color: #15803d; border-left: 4px solid #22c55e; }
.flash-bar.warning { background: #fffbeb; color: #92400e; border-left: 4px solid var(--cmru-gold); }

@keyframes slideDown {
  from { opacity: 0; transform: translate(-50%, -12px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .login-body { padding: 1.5rem 1.2rem; }
}
