/* ============================================================
   IFA Countdown 2026 – style.css
   Paleta: Verde #0A7A4B | Azul oscuro #1E3565 | Blanco #FFFFFF
   ============================================================ */

/* ── Tokens ── */
:root {
  --green:       #0A7A4B;
  --green-light: #12a665;
  --blue:        #1E3565;
  --blue-light:  #2a4a8a;
  --white:       #ffffff;
  --gray-100:    #f4f6f9;
  --gray-200:    #e2e8f0;
  --gray-400:    #94a3b8;
  --gray-700:    #334155;
  --text:        #1a2a3a;
  --card-bg:     #ffffff;
  --body-bg:     #f0f4f8;
  --shadow:      0 4px 24px rgba(30, 53, 101, 0.10);
  --shadow-hover:0 8px 36px rgba(30, 53, 101, 0.18);
  --radius:      16px;
  --transition:  0.3s ease;
}

/* ── Dark mode ── */
[data-theme="dark"] {
  --text:      #e2e8f0;
  --card-bg:   #1a2540;
  --body-bg:   #0f172a;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
  --shadow-hover: 0 8px 36px rgba(0,0,0,0.55);
  --gray-100:  #1e2d45;
  --gray-200:  #2a3a55;
  --gray-400:  #7a90b0;
  --gray-700:  #cbd5e1;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--body-bg);
  color: var(--text);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

/* ── Fade-in on load ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

#main-content {
  animation: fadeUp 0.7s ease both;
}

/* ============================================================
   MANTENIMIENTO
   ============================================================ */
#mantenimiento-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--body-bg);
  padding: 2rem;
}

#mantenimiento-screen[hidden] { display: none; }

.mant-box {
  text-align: center;
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  box-shadow: var(--shadow);
  max-width: 480px;
  width: 100%;
}

.mant-icon { font-size: 4rem; display: block; margin-bottom: 1rem; }

.mant-box h1 {
  font-size: 1.7rem;
  color: var(--blue);
  margin-bottom: 0.75rem;
}

.mant-box p { color: var(--gray-400); font-size: 1rem; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-light) 100%);
  color: var(--white);
  padding: 2.5rem 1.5rem 2rem;
  text-align: center;
  position: relative;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  position: relative;
}

/* Logo block */
.logo-block {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: transform 0.2s;
}

.logo-block:hover {
  transform: scale(1.02);
}

.shield-svg {
  width: 64px;
  height: 72px;
  flex-shrink: 0;
  object-fit: contain;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.3));
}

.logo-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.inst-label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.8;
  font-weight: 400;
}

.inst-name {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.inst-loc {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.75;
  margin-top: 1px;
}

/* Theme button */
.theme-btn {
  position: absolute;
  right: 0;
  top: 0;
  background: rgba(255,255,255,0.15);
  border: 1.5px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  font-size: 1.15rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform 0.2s;
}

.theme-btn:hover {
  background: rgba(255,255,255,0.28);
  transform: scale(1.08);
}

/* Subtitle */
.page-subtitle {
  margin-top: 1.25rem;
  font-size: 1rem;
  letter-spacing: 0.06em;
  opacity: 0.85;
  text-transform: uppercase;
  font-weight: 400;
}

/* ============================================================
   MAIN
   ============================================================ */
main {
  max-width: 860px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 1.5rem;
}

/* ── Cards ── */
.cards-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 560px) {
  .cards-section { grid-template-columns: 1fr; }
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.25rem 1.5rem 2rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
  animation: fadeUp 0.7s ease both;
  position: relative;
  overflow: hidden;
}

/* Accent stripe top */
.card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  border-radius: var(--radius) var(--radius) 0 0;
}

#card-transcurridos-clase::before { background: var(--blue); }
#card-restantes-clase::before { background: var(--green); }

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.card-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--gray-400);
  margin-bottom: 0.75rem;
}

.card-number {
  font-size: clamp(3.5rem, 12vw, 5.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

#card-transcurridos-clase .card-number { color: var(--blue); }
#card-restantes-clase .card-number { color: var(--green); }

[data-theme="dark"] #card-transcurridos-clase .card-number { color: #7fa8e8; }
[data-theme="dark"] #card-restantes-clase .card-number { color: #3dcc8c; }

.card-sub {
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* ── Info section ── */
.info-section {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem 1.75rem 1.5rem;
  margin-bottom: 1.75rem;
  animation: fadeUp 0.85s ease both;
}

.info-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 130px;
}

.info-key {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-400);
  font-weight: 600;
}

.info-val {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--text);
}

/* Progress bar */
.progress-wrap { }

.progress-track {
  background: var(--gray-200);
  border-radius: 100px;
  height: 12px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--green) 0%, var(--blue) 100%);
  width: 0%;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-ends {
  display: flex;
  justify-content: space-between;
  margin-top: 0.4rem;
  font-size: 0.72rem;
  color: var(--gray-400);
}

/* ── Feriados details ── */
.feriados-details {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.5rem;
  animation: fadeUp 0.95s ease both;
}

.feriados-details summary {
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-400);
  letter-spacing: 0.04em;
  padding: 0.4rem 0;
  user-select: none;
  list-style: none;
}

.feriados-details summary::-webkit-details-marker { display: none; }

.feriados-details summary::before {
  content: '▶ ';
  font-size: 0.65rem;
}

.feriados-details[open] summary::before { content: '▼ '; }

.feriados-ul {
  margin-top: 1rem;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.4rem 1rem;
}

.feriados-ul li {
  font-size: 0.82rem;
  color: var(--gray-700);
  padding: 0.35rem 0.6rem;
  border-left: 3px solid var(--green);
  border-radius: 0 6px 6px 0;
  background: var(--gray-100);
}

[data-theme="dark"] .feriados-ul li { color: var(--gray-400); }

/* ============================================================
   COUNTDOWN EN TIEMPO REAL
   ============================================================ */
.countdown-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem 2rem 1.6rem;
  margin-bottom: 2rem;
  animation: fadeUp 0.6s ease both;
  position: relative;
  overflow: hidden;
}

.countdown-wrap::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--green) 100%);
  border-radius: var(--radius) var(--radius) 0 0;
}

.countdown-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--gray-400);
  margin-bottom: 1.1rem;
}

.countdown-units {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.countdown-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
}

.countdown-num {
  font-size: clamp(2.2rem, 8vw, 3.8rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, var(--blue) 0%, var(--green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 2ch;
  text-align: center;
}

[data-theme="dark"] .countdown-num {
  background: linear-gradient(135deg, #7fa8e8 0%, #3dcc8c 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.countdown-unit-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-400);
  font-weight: 600;
}

.countdown-sep {
  font-size: clamp(2rem, 7vw, 3.2rem);
  font-weight: 900;
  color: var(--gray-200);
  line-height: 1;
  margin-bottom: 1.2rem;
  user-select: none;
}

.countdown-sub {
  font-size: 0.8rem;
  color: var(--gray-400);
  margin-top: 1rem;
  font-weight: 500;
}

/* ============================================================
   PRÓXIMOS FERIADOS
   ============================================================ */
.proximos-wrap {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.75rem;
  animation: fadeUp 0.9s ease both;
}

.proximos-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-400);
  margin-bottom: 1.1rem;
}

.proximos-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.proximos-empty {
  font-size: 0.85rem;
  color: var(--gray-400);
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-12px); }
  to   { opacity: 1; transform: translateX(0); }
}

.proximo-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--gray-100);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  animation: slideIn 0.35s ease both;
  transition: transform var(--transition), box-shadow var(--transition);
}

.proximo-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow);
}

.proximo-badge {
  font-size: 1.4rem;
  flex-shrink: 0;
  width: 36px;
  text-align: center;
}

.proximo-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
  min-width: 0;
}

.proximo-nombre {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.proximo-fecha {
  font-size: 0.75rem;
  color: var(--gray-400);
}

.proximo-dias {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--blue) 0%, var(--green) 100%);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
  min-width: 52px;
}

.proximo-num {
  font-size: 1.4rem;
  font-weight: 900;
  color: white;
  line-height: 1;
}

.proximo-label-dias {
  font-size: 0.62rem;
  color: rgba(255,255,255,0.8);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  text-align: center;
  padding: 1.25rem;
  font-size: 0.78rem;
  color: var(--gray-400);
  border-top: 1px solid var(--gray-200);
  margin-top: 1rem;
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}