/* Viktor Calendar - Dark Theme Styles */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --bg-hover: #252525;
  --border: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
}

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

/* Loading */
.loading {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Auth Gate */
.auth-gate {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 48px;
  text-align: center;
  max-width: 400px;
  width: 100%;
}

.login-logo {
  font-size: 64px;
  margin-bottom: 16px;
}

.login-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff 0%, #a855f7 50%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.google-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.875rem 1.5rem;
  background: #fff;
  color: #1f1f1f;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.google-btn:hover {
  background: #f3f4f6;
  transform: translateY(-2px);
}

.google-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.login-note {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  gap: 16px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo {
  font-size: 28px;
}

.header-title {
  font-size: 20px;
  font-weight: 600;
}

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

.nav-btn {
  width: 36px;
  height: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
}

.current-period {
  font-size: 18px;
  font-weight: 600;
  min-width: 180px;
  text-align: center;
}

.today-btn {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.today-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.view-tabs {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.view-tab {
  padding: 8px 16px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.view-tab:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

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

.add-event-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.add-event-btn:hover {
  background: var(--accent-hover);
}

.settings-btn {
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  transition: all 0.2s;
}

.settings-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border);
}

.signout-btn {
  padding: 8px 16px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.signout-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Calendar Container */
.calendar-container {
  display: flex;
  flex: 1;
  height: calc(100vh - 65px);
  overflow: hidden;
}

.calendar-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Month View */
.weekday-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.weekday-header span {
  padding: 12px;
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.month-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-template-rows: repeat(6, 1fr);
  flex: 1;
  background: var(--bg-primary);
}

.day-cell {
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 8px;
  min-height: 100px;
  cursor: pointer;
  transition: background 0.2s;
  overflow: hidden;
}

.day-cell:nth-child(7n) {
  border-right: none;
}

.day-cell:hover {
  background: var(--bg-hover);
}

.day-cell.other-month {
  background: var(--bg-secondary);
}

.day-cell.other-month .day-number {
  color: var(--text-muted);
}

.day-cell.today .day-number {
  background: var(--accent);
  color: white;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.day-cell.selected {
  background: rgba(99, 102, 241, 0.1);
}

.day-number {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
}

.day-events {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
}

.event-chip {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: opacity 0.2s;
}

.event-chip:hover {
  opacity: 0.8;
}

.event-chip.task {
  background: rgba(139, 92, 246, 0.3);
  color: #a78bfa;
  border-left: 2px solid #a78bfa;
}

.event-chip.reminder {
  background: rgba(245, 158, 11, 0.3);
  color: #fbbf24;
  border-left: 2px solid #fbbf24;
}

.more-events {
  font-size: 11px;
  color: var(--text-muted);
  padding: 2px 6px;
}

/* Week View */
.week-header {
  display: grid;
  grid-template-columns: 60px repeat(7, 1fr);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.week-header-cell {
  padding: 12px 8px;
  text-align: center;
  border-right: 1px solid var(--border);
}

.week-header-cell:last-child {
  border-right: none;
}

.week-header-day {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.week-header-date {
  font-size: 24px;
  font-weight: 600;
  margin-top: 4px;
}

.week-header-cell.today .week-header-date {
  background: var(--accent);
  color: white;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 4px auto 0;
}

.week-grid {
  display: grid;
  grid-template-columns: 60px repeat(7, 1fr);
  flex: 1;
  overflow-y: auto;
}

.time-column {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
}

.time-slot {
  height: 60px;
  padding: 4px 8px;
  font-size: 11px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.day-column {
  position: relative;
  border-right: 1px solid var(--border);
}

.day-column:last-child {
  border-right: none;
}

.hour-slot {
  height: 60px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}

.hour-slot:hover {
  background: var(--bg-hover);
}

.week-event {
  position: absolute;
  left: 2px;
  right: 2px;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  overflow: hidden;
  cursor: pointer;
  z-index: 1;
}

/* Day View */
.day-header {
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.day-header-date {
  font-size: 28px;
  font-weight: 600;
}

.day-header-weekday {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.day-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  flex: 1;
  overflow-y: auto;
}

.day-time-slot {
  height: 60px;
  padding: 8px 16px;
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
}

.day-event-slot {
  height: 60px;
  border-bottom: 1px solid var(--border);
  position: relative;
  cursor: pointer;
  transition: background 0.2s;
}

.day-event-slot:hover {
  background: var(--bg-hover);
}

.day-event {
  position: absolute;
  left: 8px;
  right: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  z-index: 1;
}

/* Sidebar */
.sidebar {
  width: 320px;
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s;
}

.sidebar.open {
  transform: translateX(0);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.sidebar-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
}

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

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.sidebar-event {
  padding: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: all 0.2s;
  border-left: 4px solid var(--accent);
}

.sidebar-event:hover {
  background: var(--bg-hover);
}

.sidebar-event-title {
  font-weight: 500;
  margin-bottom: 4px;
}

.sidebar-event-time {
  font-size: 13px;
  color: var(--text-secondary);
}

.sidebar-event-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
}

.sidebar-empty {
  text-align: center;
  padding: 32px 16px;
  color: var(--text-muted);
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 20px;
  font-weight: 600;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
}

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

.modal-body {
  padding: 24px;
}

#event-form {
  padding: 24px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.color-picker {
  display: flex;
  gap: 8px;
}

.color-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.color-btn:hover {
  transform: scale(1.1);
}

.color-btn.active {
  border-color: white;
  box-shadow: 0 0 0 2px var(--bg-card);
}

.form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.form-actions-right {
  display: flex;
  gap: 12px;
}

.btn-primary,
.btn-secondary,
.btn-delete {
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: white;
  border: none;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-delete {
  background: transparent;
  color: var(--error);
  border: 1px solid var(--error);
}

.btn-delete:hover {
  background: var(--error);
  color: white;
}

/* Settings Modal */
.settings-modal-content {
  max-width: 450px;
}

.setting-group {
  margin-bottom: 24px;
}

.setting-group h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.setting-group select {
  width: 100%;
  padding: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 15px;
}

.setting-note {
  font-size: 13px;
  color: var(--text-muted);
}

.setting-note a {
  color: var(--accent);
}

/* Chat Widget */
.chat-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 350px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  z-index: 90;
  overflow: hidden;
  transition: all 0.3s ease;
}

.chat-widget.collapsed {
  height: 48px;
}

.chat-widget.collapsed .chat-body {
  display: none;
}

.chat-widget.collapsed .chat-toggle {
  transform: rotate(180deg);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 500;
}

.chat-toggle {
  font-size: 12px;
  transition: transform 0.3s;
}

.chat-body {
  display: flex;
  flex-direction: column;
  height: 350px;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.chat-welcome {
  text-align: center;
  padding: 24px 16px;
  color: var(--text-secondary);
  font-size: 14px;
}

.chat-message {
  margin-bottom: 12px;
  max-width: 85%;
}

.chat-message.user {
  margin-left: auto;
}

.chat-message-content {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.4;
}

.chat-message.user .chat-message-content {
  background: var(--accent);
  color: white;
  border-bottom-right-radius: 4px;
}

.chat-message.assistant .chat-message-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.chat-input-area {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.chat-input-area input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
}

.chat-input-area input:focus {
  border-color: var(--accent);
}

.chat-input-area button {
  padding: 10px 14px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  transition: background 0.2s;
}

.chat-input-area button:hover {
  background: var(--accent-hover);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 14px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 14px;
  opacity: 0;
  transition: all 0.3s;
  z-index: 1000;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.success {
  border-color: var(--success);
}

.toast.error {
  border-color: var(--error);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
  .header {
    flex-wrap: wrap;
    gap: 12px;
  }

  .header-center {
    order: 3;
    width: 100%;
    justify-content: center;
  }

  .sidebar {
    position: fixed;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 50;
  }
}

@media (max-width: 768px) {
  .header-title {
    display: none;
  }

  .view-tabs {
    display: none;
  }

  .signout-btn {
    display: none;
  }

  .current-period {
    font-size: 16px;
    min-width: 140px;
  }

  .day-cell {
    min-height: 80px;
    padding: 4px;
  }

  .day-number {
    font-size: 12px;
  }

  .event-chip {
    font-size: 10px;
    padding: 1px 4px;
  }

  .chat-widget {
    width: calc(100% - 32px);
    right: 16px;
    bottom: 16px;
  }

  .sidebar {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 8px 12px;
  }

  .add-event-btn span {
    display: none;
  }

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