/* ========================================
   STAJ DEFTERİ - Ana Stil Dosyası
   Dark Theme + Glassmorphism + Responsive
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ---- CSS Variables ---- */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a2e;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --bg-input: rgba(255, 255, 255, 0.06);
  --accent: #6c63ff;
  --accent-light: #8b83ff;
  --accent-dark: #5046e5;
  --accent-glow: rgba(108, 99, 255, 0.3);
  --accent-glow-strong: rgba(108, 99, 255, 0.5);
  --text-primary: #e8e8ec;
  --text-secondary: #8888aa;
  --text-muted: #555570;
  --success: #4ade80;
  --success-bg: rgba(74, 222, 128, 0.1);
  --warning: #fbbf24;
  --warning-bg: rgba(251, 191, 36, 0.1);
  --danger: #f87171;
  --danger-bg: rgba(248, 113, 113, 0.1);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- Animated Background ---- */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(108, 99, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(99, 102, 241, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(139, 131, 255, 0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ---- Typography ---- */
h1, h2, h3, h4, h5 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent);
}

/* ---- Layout ---- */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.page-content {
  padding-top: 80px;
  min-height: 100vh;
}

/* ---- Glass Card ---- */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
}

/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.navbar-brand .brand-icon {
  font-size: 1.5rem;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.navbar-user .user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.8rem;
  color: white;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-card);
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  border-color: var(--accent);
  color: var(--accent-light);
}

.btn-secondary:hover {
  background: rgba(108, 99, 255, 0.1);
}

.btn-danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger-bg);
}

.btn-success {
  background: var(--success);
  border-color: var(--success);
  color: #0a0a0f;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-icon {
  padding: 8px;
  min-width: 36px;
  min-height: 36px;
}

/* ---- Forms ---- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.7;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- Auth Page ---- */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
  position: relative;
  z-index: 1;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  padding: 40px;
  animation: slideUp 0.6s ease;
}

.auth-header {
  text-align: center;
  margin-bottom: 32px;
}

.auth-header .logo {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.auth-header h1 {
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.auth-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 28px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}

.auth-tab {
  flex: 1;
  padding: 12px;
  text-align: center;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.auth-tab.active {
  background: var(--accent);
  color: white;
}

.auth-tab:hover:not(.active) {
  background: var(--bg-card-hover);
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ---- Dashboard ---- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  padding: 20px;
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.success .stat-value { color: var(--success); }

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.toolbar-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.toolbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---- Day Grid ---- */
.day-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}

.day-card {
  padding: 20px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.day-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--border);
  transition: var(--transition);
}

.day-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.day-card:hover::before {
  background: var(--accent);
}

.day-card.filled::before {
  background: var(--success);
}

.day-card.empty::before {
  background: var(--warning);
}

.day-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.day-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-light);
}

.day-card.filled .day-number {
  color: var(--success);
}

.day-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.day-name {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.day-preview {
  font-size: 0.82rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-height: 20px;
}

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(74, 222, 128, 0.2);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(251, 191, 36, 0.2);
}

.badge-empty {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* ---- Progress Bar ---- */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 4px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  animation: shimmer 2s infinite;
}

/* ---- Entry Page ---- */
.entry-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding-top: 20px;
}

.editor-panel {
  padding: 28px;
}

.preview-panel {
  padding: 20px;
  position: sticky;
  top: 84px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.entry-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.day-info {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.day-info-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.day-info-details h3 {
  font-size: 1rem;
  margin-bottom: 2px;
}

.day-info-details p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.char-counter {
  text-align: right;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.char-counter.warning { color: var(--warning); }
.char-counter.danger { color: var(--danger); }

.auto-save-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 10px;
}

.auto-save-indicator.saved { color: var(--success); }

/* Mobile tabs */
.mobile-tabs {
  display: none;
  gap: 0;
  margin-bottom: 16px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}

.mobile-tab {
  flex: 1;
  padding: 10px;
  text-align: center;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.mobile-tab.active {
  background: var(--accent);
  color: white;
}

/* ---- Admin ---- */
.user-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.user-card {
  padding: 20px;
  cursor: pointer;
}

.user-card:hover {
  border-color: var(--accent);
}

.user-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.user-name {
  font-weight: 600;
  font-size: 1.05rem;
}

.user-username {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.user-info {
  display: flex;
  gap: 20px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.user-expanded {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: none;
}

.user-expanded.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
}

.modal-overlay.show {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal-header h2 {
  font-size: 1.2rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

/* ---- Toast Notifications ---- */
#toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  animation: slideUp 0.3s ease;
  pointer-events: auto;
  min-width: 280px;
  font-size: 0.9rem;
}

.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--danger); }
.toast-warning { border-left: 3px solid var(--warning); }

.toast-hide {
  animation: fadeOut 0.3s ease forwards;
}

.toast-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* ---- Dropdown ---- */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  z-index: 50;
  display: none;
  animation: fadeIn 0.2s ease;
  overflow: hidden;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}

.dropdown-item:hover {
  background: var(--bg-card-hover);
}

/* ---- Setup Section ---- */
.setup-section {
  max-width: 600px;
  margin: 40px auto;
  padding: 40px;
  text-align: center;
}

.setup-section h2 {
  margin-bottom: 8px;
}

.setup-section p {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.setup-form {
  text-align: left;
}

.date-range {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ---- Spinner ---- */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.page-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}

/* ---- Animations ---- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(40px); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes shimmer {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .entry-layout {
    grid-template-columns: 1fr;
  }

  .preview-panel {
    position: static;
    max-height: none;
  }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .navbar { padding: 0 16px; }

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }

  .auth-card { padding: 28px 20px; }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }

  .day-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 10px;
  }

  .day-card { padding: 14px; }
  .day-number { font-size: 1.2rem; }

  .entry-layout {
    grid-template-columns: 1fr;
  }

  .mobile-tabs {
    display: flex;
  }

  .editor-panel.hidden-mobile,
  .preview-panel.hidden-mobile {
    display: none;
  }

  .toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .date-range {
    grid-template-columns: 1fr;
  }

  .navbar-user span:not(.user-avatar) {
    display: none;
  }
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state h3 {
  color: var(--text-secondary);
  margin-bottom: 8px;
}

/* ---- PDF Modal ---- */
.pdf-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pdf-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.pdf-option:hover {
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.05);
}

.pdf-option-icon {
  font-size: 1.3rem;
}

.pdf-option-text h4 {
  font-size: 0.95rem;
  font-weight: 500;
}

.pdf-option-text p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ---- Image Upload ---- */
.image-upload-container {
  display: flex;
  gap: 16px;
  margin-top: -10px;
}

.image-upload-box {
  flex: 1;
  height: 120px;
  background: var(--bg-input);
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.image-upload-box:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.upload-placeholder {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.image-upload-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.remove-image-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  z-index: 2;
  transition: var(--transition);
}

.remove-image-btn:hover {
  background: var(--danger);
}