/* ============================================================
   YEREL PLUS JAKARTA SANS FONT TANIMLARI (Preloaded & Offline)
   ============================================================ */
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('fonts/plus-jakarta-sans-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('fonts/plus-jakarta-sans-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ============================================================
   TEMA DEĞİŞKENLERİ (VARSAYILAN: AYDINLIK TEMA - LIGHT)
   GPU / Donanım Dostu (Pardus & Düşük Donanımlar İçin Optimize)
   ============================================================ */
:root, [data-theme="light"] {
  --bg-color: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-subtle: #f8fafc;
  --border-color: #cbd5e1;
  --border-card: #94a3b8;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-subtle: #64748b;
  
  /* Yüksek Kontrastlı Durum Renkleri */
  --status-lesson: #059669; /* Koyu Zümrüt */
  --status-break: #0284c7;  /* Koyu Gök Mavi */
  --status-lunch: #d97706;  /* Canlı Kehribar Turuncu */
  --status-off: #4f46e5;    /* İndigo */

  --current-theme: var(--status-lesson);
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Opsiyonel Karanlık Tema */
[data-theme="dark"] {
  --bg-color: #0f172a;
  --bg-card: #1e293b;
  --bg-card-subtle: #182234;
  --border-color: #334155;
  --border-card: #475569;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;

  --status-lesson: #10b981;
  --status-break: #38bdf8;
  --status-lunch: #fbbf24;
  --status-off: #818cf8;

  --current-theme: var(--status-lesson);
}

/* ============================================================
   TEMEL VE GENEL SIFIRLAMA
   ============================================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-family) !important;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  user-select: none;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 1.25rem 2rem;
  max-width: 1550px;
  margin: 0 auto;
  width: 100%;
}

/* ============================================================
   ÜST BAR (HEADER)
   ============================================================ */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1.25rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.school-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.school-badge {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--current-theme);
}

.school-info h1 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  line-height: 1.2;
}

.schedule-type-badge {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.clock-and-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.live-datetime {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

#currentDateDisplay {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.digital-clock {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-main);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.action-buttons {
  display: flex;
  gap: 0.5rem;
}

.icon-btn {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.icon-btn:hover {
  background-color: var(--border-color);
}

.icon-btn:active {
  transform: translateY(1px);
}

/* ============================================================
   SİMÜLASYON UYARI ŞERİDİ
   ============================================================ */
.simulation-banner {
  background-color: #fef3c7;
  border: 2px solid #f59e0b;
  color: #92400e;
  padding: 0.65rem 1.25rem;
  border-radius: 12px;
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-size: 0.95rem;
}

.btn-text {
  background-color: #d97706;
  color: #ffffff;
  border: none;
  padding: 0.4rem 0.9rem;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}

.btn-text:hover {
  background-color: #b45309;
}

/* ============================================================
   ANA SAYAÇ KARTI (HERO SECTION) - DONANIM DOSTU
   ============================================================ */
.main-display {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 0;
}

.status-card {
  width: 100%;
  max-width: 1050px;
  background-color: var(--bg-card);
  border: 2px solid var(--border-color);
  border-top: 6px solid var(--current-theme);
  border-radius: 24px;
  padding: 2.25rem 3rem;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-card-subtle);
  border: 2px solid var(--current-theme);
  padding: 0.45rem 1.1rem;
  border-radius: 9999px;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--current-theme);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--current-theme);
}

.time-range-badge {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  padding: 0.4rem 1rem;
  border-radius: 10px;
  font-variant-numeric: tabular-nums;
}

.period-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-top: 0.25rem;
  color: var(--text-main);
  line-height: 1.1;
}

.period-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
  font-weight: 600;
}

/* ============================================================
   BÜYÜK GERİ SAYIM RAKAMLARI (Plus Jakarta Sans Tabular-Nums)
   ============================================================ */
.countdown-container {
  margin: 1.25rem 0;
  display: flex;
  justify-content: center;
}

.countdown-wrapper {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--bg-card-subtle);
  border: 2px solid var(--border-color);
  border-radius: 20px;
  padding: 1rem 3.5rem;
}

.countdown-digits {
  font-size: clamp(4.5rem, 11vw, 8.5rem);
  font-weight: 800;
  line-height: 1;
  color: var(--current-theme);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  font-variant-numeric: tabular-nums;
  -moz-font-feature-settings: "tnum";
  -webkit-font-feature-settings: "tnum";
  font-feature-settings: "tnum";
}

.countdown-digits span {
  display: inline-block;
  min-width: 0.6em;
  text-align: center;
}

.countdown-digits .colon {
  min-width: 0.3em;
  color: var(--text-subtle);
  margin: 0 0.1em;
}

.countdown-labels {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 0 1.25rem;
  margin-top: 0.25rem;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}

/* ============================================================
   İLERLEME ÇUBUĞU (PROGRESS BAR)
   ============================================================ */
.progress-section {
  margin: 1.25rem 0 0.75rem;
}

.progress-bar-bg {
  width: 100%;
  height: 16px;
  background-color: var(--border-color);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--current-theme);
  border-radius: 9999px;
  transition: width 0.3s ease;
}

.progress-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   BİR SONRAKİ ETKİNLİK ŞERİDİ
   ============================================================ */
.next-activity-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  padding: 0.65rem 1.4rem;
  border-radius: 12px;
  margin-top: 0.75rem;
}

.next-icon {
  color: var(--current-theme);
  display: flex;
  align-items: center;
}

.next-label {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-right: 0.25rem;
}

.next-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
}

/* ============================================================
   ALT ZAMAN ÇİZELGESİ (TIMELINE)
   ============================================================ */
.schedule-timeline-container {
  margin-top: auto;
  padding-top: 1rem;
}

.schedule-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.65rem;
}

.schedule-header h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
}

.schedule-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.65rem;
}

.timeline-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.75rem 0.5rem;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.timeline-item.active {
  border: 2px solid var(--current-theme);
  background-color: var(--bg-card-subtle);
}

.timeline-item.passed {
  opacity: 0.45;
}

.timeline-item.lunch {
  border-color: var(--status-lunch);
}

.timeline-item-title {
  font-weight: 800;
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
  color: var(--text-main);
}

.timeline-item.active .timeline-item-title {
  color: var(--current-theme);
}

.timeline-item-time {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   MODAL & YÖNETİM PANELİ (PARDUS / HAFİF ARAYÜZ)
   ============================================================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1.5rem;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-card {
  background-color: var(--bg-card);
  border: 2px solid var(--border-card);
  border-radius: 16px;
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-title-group h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
}

.modal-title-group p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
  font-weight: 600;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem;
}

.close-btn:hover {
  color: var(--text-main);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-muted);
  padding: 0.55rem 0.85rem;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  color: #0284c7;
  border-bottom-color: #0284c7;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  font-weight: 600;
}

.form-control:focus {
  border-color: #0284c7;
  box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.2);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.dyk-days-container {
  margin-left: 28px;
  margin-top: 8px;
  padding: 0.5rem 0.75rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
}

.checkbox-label.inline-check {
  display: inline-flex;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: #0284c7;
  cursor: pointer;
}

.info-alert {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background-color: #e0f2fe;
  border: 1px solid #7dd3fc;
  color: #0369a1;
  padding: 0.9rem 1.1rem;
  border-radius: 10px;
  font-size: 0.85rem;
  line-height: 1.5;
  margin-top: 1.5rem;
  font-weight: 600;
}

/* ============================================================
   TABLOLAR & LİSTELER
   ============================================================ */
.schedule-table-wrapper {
  max-height: 350px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 10px;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.schedule-table th {
  background-color: var(--bg-card-subtle);
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 800;
  position: sticky;
  top: 0;
  border-bottom: 1px solid var(--border-color);
}

.schedule-table td {
  padding: 0.65rem 1rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--text-main);
}

.schedule-table input[type="time"] {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 6px;
  padding: 0.35rem 0.5rem;
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.action-cell-btn {
  background-color: #fee2e2;
  border: 1px solid #fca5a5;
  color: #b91c1c;
  border-radius: 6px;
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
}

.action-cell-btn:hover {
  background-color: #ef4444;
  color: #ffffff;
}

/* ============================================================
   BUTONLAR
   ============================================================ */
.btn {
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary {
  background-color: #0284c7;
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #0369a1;
}

.btn-secondary {
  background-color: var(--bg-card-subtle);
  color: var(--text-main);
  border-color: var(--border-card);
}

.btn-secondary:hover {
  background-color: var(--border-color);
}

.btn-danger-outline {
  background-color: transparent;
  border-color: #f87171;
  color: #dc2626;
}

.btn-danger-outline:hover {
  background-color: #fee2e2;
}

.btn-warning {
  background-color: #f59e0b;
  color: #0f172a;
}

.btn-warning:hover {
  background-color: #d97706;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border-card);
  color: var(--text-main);
}

.btn-outline:hover {
  background-color: var(--bg-card-subtle);
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

.modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-card-subtle);
  border-bottom-left-radius: 16px;
  border-bottom-right-radius: 16px;
}

.footer-right {
  display: flex;
  gap: 0.75rem;
}

.quick-test-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin: 1rem 0 1.5rem;
}

.label-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  width: 100%;
  font-weight: 700;
}

.sim-actions {
  display: flex;
  gap: 0.75rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.mt-3 {
  margin-top: 0.75rem;
}

.hidden {
  display: none !important;
}

@media (max-width: 768px) {
  .app-container {
    padding: 1rem;
  }
  .top-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .clock-and-actions {
    width: 100%;
    justify-content: space-between;
  }
  .status-card {
    padding: 1.5rem 1rem;
  }
  .countdown-wrapper {
    padding: 0.75rem 1.5rem;
  }
  .countdown-digits {
    font-size: 3.5rem;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}