:root {
  --bg-primary: #FFFFFF;
  --bg-secondary: #F7F7F5;
  --accent-blue: #0A66C2;
  --text-primary: #111111;
  --text-secondary: #6B7280;
  --border-color: #E5E7EB;
  --radius-card: 12px;
  --radius-pill: 6px;
  --radius-toggle: 999px;
  --shadow-soft: 0 2px 12px rgba(0,0,0,0.07);
  --overlay-bg: rgba(0,0,0,0.35);
  --transition-speed: 0.18s;
  
  --status-draft-bg: #F3F4F6;
  --status-draft-text: #6B7280;
  --status-scheduled-bg: #E8F0FE;
  --status-scheduled-text: #0A66C2;
  --status-published-bg: #ECFDF5;
  --status-published-text: #10B981;
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Utilities */
.hidden { display: none !important; }
.font-semibold { font-weight: 600; }
.w-full { width: 100%; }

/* Buttons */
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-speed) ease;
}

.btn-primary {
  background-color: var(--accent-blue);
  color: white;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  font-weight: 500;
}

.btn-primary:hover {
  background-color: #084e96;
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  font-weight: 500;
}

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

.btn-danger {
  color: #DC2626;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
}

.btn-danger:hover {
  background-color: #FEE2E2;
}

.btn-text {
  color: var(--accent-blue);
  font-weight: 500;
}

.btn-text:hover {
  text-decoration: underline;
}

/* Layout */
#app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Top Bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-primary);
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-blue);
}

.top-bar-center {
  display: flex;
  align-items: center;
  gap: 16px;
}

.top-bar-center h1 {
  font-size: 1.125rem;
  font-weight: 600;
  min-width: 140px;
  text-align: center;
}

.nav-btn {
  font-size: 1.25rem;
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 4px;
}

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

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

.avatar-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--bg-secondary);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  padding-bottom: 80px; /* Space for bottom bar */
}

/* Calendar */
.calendar-wrapper {
  max-width: 1200px;
  margin: 0 auto;
}

.calendar-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  margin-bottom: 12px;
}

.weekday-label {
  text-align: center;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
  min-height: 600px;
}

.day-cell {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-card);
  min-height: 120px;
  padding: 12px;
  position: relative;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.day-cell:hover {
  box-shadow: var(--shadow-soft);
  background-color: #f0f0ed;
}

.day-cell.inactive {
  background-color: #fafaf9;
  opacity: 0.5;
  pointer-events: none;
}

.day-number {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  margin-bottom: 4px;
}

.day-cell.today .day-number {
  background-color: var(--accent-blue);
  color: white;
}

.add-post-trigger {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: white;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--accent-blue);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  opacity: 0;
  transition: opacity var(--transition-speed) ease;
}

.day-cell:hover .add-post-trigger {
  opacity: 1;
}

.add-post-trigger:hover {
  transform: scale(1.1);
}

.post-pill {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background-color: #F8FAFC;
  border: 1px solid var(--border-color);
  padding: 8px;
  border-radius: 8px;
  color: var(--text-primary);
  text-decoration: none;
  overflow: hidden;
}

.post-pill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.post-pill-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #1E40AF;
}

.post-pill-thumb {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
  border: 1px solid var(--border-color);
}

.post-pill-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
}

.post-pill-status.draft { background-color: #FFEDD5; color: #EA580C; }
.post-pill-status.scheduled { background-color: #E0E7FF; color: #4338CA; }
.post-pill-status.published { background-color: #DCFCE7; color: #16A34A; }

.tag-selection-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 8px;
  max-height: 200px;
  overflow-y: auto;
  padding: 4px;
}

.tag-checkbox-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 500;
}

.tag-swatch {
  width: 32px;
  height: 20px;
  border-radius: 4px;
}

.add-tag-wrapper {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.tag-badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-toggle);
  font-weight: 600;
  color: white;
  display: inline-block;
  margin-right: 4px;
}

.empty-state-illustration {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  padding: 60px 0;
}

.empty-state-illustration svg {
  margin-bottom: 16px;
  opacity: 0.5;
}

/* Day Panel */
.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--overlay-bg);
  backdrop-filter: blur(4px);
  z-index: 40;
}

.day-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 360px;
  height: 100%;
  background-color: var(--bg-primary);
  box-shadow: -4px 0 24px rgba(0,0,0,0.05);
  z-index: 50;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}

.day-panel.slide-out {
  transform: translateX(100%);
}

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

.panel-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.close-btn {
  font-size: 1.25rem;
  color: var(--text-secondary);
}

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

.panel-content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.post-card {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-card);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.post-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.time-badge {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.status-badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-toggle);
  font-weight: 500;
}

.status-badge.draft { background-color: var(--status-draft-bg); color: var(--status-draft-text); }
.status-badge.scheduled { background-color: var(--status-scheduled-bg); color: var(--status-scheduled-text); }
.status-badge.published { background-color: var(--status-published-bg); color: var(--status-published-text); }

.post-caption {
  font-size: 0.9375rem;
  line-height: 1.5;
  max-height: 100px;
  overflow-y: auto;
}

.post-media-thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.media-thumbnail {
  width: 60px;
  height: 60px;
  border-radius: 8px;
  object-fit: cover;
  cursor: pointer;
  border: 1px solid var(--border-color);
}

.post-card-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.icon-btn {
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.875rem;
}

.icon-btn:hover {
  background-color: rgba(0,0,0,0.05);
  color: var(--text-primary);
}

.panel-footer {
  padding: 24px;
  border-top: 1px solid var(--border-color);
}

/* Bottom Bar */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 12px 24px;
  display: flex;
  justify-content: center;
  z-index: 30;
}

.account-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  transition: background-color var(--transition-speed);
}

.account-switcher:hover {
  background-color: var(--bg-secondary);
}

.account-popover {
  position: absolute;
  bottom: 100%;
  margin-bottom: 8px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  width: 240px;
  overflow: hidden;
}

#account-list {
  list-style: none;
  max-height: 200px;
  overflow-y: auto;
}

#account-list li {
  padding: 12px 16px;
  cursor: pointer;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--bg-secondary);
}

#account-list li:hover {
  background-color: var(--bg-secondary);
}

.popover-footer {
  padding: 12px 16px;
  background-color: #fafaf9;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--overlay-bg);
  backdrop-filter: blur(4px);
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: var(--bg-primary);
  border-radius: var(--radius-card);
  width: 100%;
  max-width: 500px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.1);
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

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

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.row {
  flex-direction: row;
  gap: 16px;
}

.form-group.row .col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-control {
  font-family: inherit;
  font-size: 0.9375rem;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: white;
  transition: border-color var(--transition-speed);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-blue);
}

textarea.form-control {
  resize: vertical;
}

/* Segmented Control */
.segmented-control {
  display: flex;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-toggle);
  padding: 4px;
  position: relative;
}

.segment {
  flex: 1;
  text-align: center;
  position: relative;
  cursor: pointer;
}

.segment input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.segment-label {
  display: block;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-toggle);
  transition: all var(--transition-speed);
  z-index: 1;
  position: relative;
}

.segment input:checked + .segment-label {
  background-color: white;
  color: var(--text-primary);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Media Dropzone */
.dropzone {
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  padding: 32px 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-speed);
  background-color: #fafaf9;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent-blue);
  background-color: #f0f7ff;
}

.dropzone-text {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.dropzone-subtext {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.media-preview-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}

.media-preview-item {
  position: relative;
  width: 60px;
  height: 60px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.media-preview-item img, .media-preview-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.remove-media-btn {
  position: absolute;
  top: 2px;
  right: 2px;
  background-color: rgba(0,0,0,0.6);
  color: white;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
}

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

.modal-actions {
  display: flex;
  gap: 12px;
  margin-left: auto;
}

/* Lightbox */
.lightbox-overlay {
  z-index: 100;
}
.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  color: white;
  font-size: 2rem;
}
.lightbox-content {
  max-width: 90vw;
  max-height: 90vh;
}
.lightbox-content img, .lightbox-content video {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
}

/* Skeleton loader */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}

.skeleton-text {
  height: 14px;
  width: 80%;
}

.skeleton-pill {
  height: 20px;
  width: 100%;
  border-radius: var(--radius-pill);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: #333;
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  z-index: 999;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
}
.toast.error { background-color: #DC2626; }
.toast.success { background-color: #10B981; }

/* Lock Screen */
.lock-screen-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.lock-screen-card {
  max-width: 400px;
  width: 90%;
  padding: 40px;
  border-radius: var(--radius-card);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 40px rgba(0,0,0,0.05);
  text-align: center;
}

.lock-icon {
  color: var(--accent-blue);
  margin-bottom: 24px;
}

.lock-screen-card h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.lock-screen-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 24px;
}

.lock-form-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.lock-form-group input {
  text-align: center;
  font-size: 1.125rem;
  padding: 12px;
}

.lock-form-group button {
  padding: 12px;
  font-size: 1.05rem;
}

.lock-error {
  color: #DC2626;
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: 12px;
}

/* =========================================================================
   Mobile Responsiveness
   ========================================================================= */

@media (max-width: 768px) {
  /* 1. Top Bar Adjustments */
  .top-bar {
    flex-wrap: wrap;
    padding: 12px 16px;
    gap: 12px;
  }
  .brand-name {
    font-size: 1.125rem;
  }
  .top-bar-center {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }
  .top-bar-center h1 {
    font-size: 1rem;
    min-width: auto;
  }
  .top-bar-right {
    gap: 8px;
  }
  #header-user-name {
    display: none; /* Hide name to save space, avatar remains */
  }
  .main-content {
    padding: 16px 12px;
    padding-bottom: 90px;
  }

  /* 2. Calendar Grid Horizontal Scroll */
  .calendar-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 12px; /* visual breathing room */
  }
  .calendar-header, .calendar-grid {
    min-width: 680px; /* Force minimum width to prevent squishing */
  }
  .day-cell {
    min-height: 110px;
    padding: 8px;
  }
  .post-pill {
    padding: 6px;
    gap: 4px;
  }
  .post-pill-info span { 
    display: none; /* hides time text on narrow screens to save space */
  }

  /* 3. Day Panel Drawer */
  .day-panel {
    width: 100%; /* Take full width on mobile */
    max-width: 100vw;
  }
  .post-card {
    padding: 12px;
  }

  /* 4. Modal Bottom Sheet styling */
  .modal-content {
    max-height: 85vh;
    border-radius: 20px 20px 0 0;
    margin-top: auto; /* Push down to bottom */
  }
  .modal-overlay {
    align-items: flex-end; /* Align modal to bottom */
  }
  .form-group.row {
    flex-direction: column;
    gap: 12px;
  }

  /* 5. Bottom Bar */
  .bottom-bar {
    padding: 10px 16px;
  }
  .account-popover {
    width: calc(100vw - 32px);
    right: 0;
    left: 16px; /* center it */
  }

  /* 6. Lock screen */
  .lock-screen-card {
    padding: 24px 20px;
    width: 95%;
  }
}