/* ==========================================================================
   Birthday Wishes Automation - Design System & Styles
   ========================================================================== */

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

/* ==========================================================================
   CSS Variables - Design Tokens
   ========================================================================== */
:root {
  /* Colors - Primary Palette */
  --color-primary: hsl(17, 100%, 58%);
  --color-primary-light: hsl(17, 100%, 68%);
  --color-primary-dark: hsl(17, 100%, 48%);

  /* Colors - Accent */
  --color-accent: hsl(38, 100%, 55%);
  --color-accent-light: hsl(38, 100%, 65%);

  /* Colors - Success/Info/Warning */
  --color-success: hsl(140, 70%, 55%);
  --color-success-gradient: linear-gradient(135deg, #15803d 0%, #065f46 100%);
  --color-success-glow: rgba(21, 128, 61, 0.4);
  --color-info: hsl(200, 80%, 60%);
  --color-warning: hsl(40, 90%, 60%);
  --color-error: hsl(0, 75%, 60%);

  /* Colors - Neutrals (Dark Mode - Glassmorphic default) */
  --color-bg-primary: hsl(240, 10%, 4%);
  --color-bg-gradient: linear-gradient(135deg, hsl(240, 10%, 3%) 0%, hsl(17, 12%, 5%) 100%);
  --color-bg-secondary: rgba(18, 18, 22, 0.45);
  --color-bg-tertiary: rgba(255, 255, 255, 0.03);
  --color-surface: rgba(18, 18, 22, 0.45);
  --color-surface-hover: rgba(255, 255, 255, 0.07);
  --color-glass-border: rgba(255, 255, 255, 0.08);
  --color-glass-border-focus: hsla(17, 100%, 58%, 0.45);
  --color-glass-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), inset 0 -1px 0 rgba(0, 0, 0, 0.15);

  /* Colors - Text */
  --color-text-primary: hsl(0, 0%, 95%);
  --color-text-secondary: hsl(0, 0%, 70%);
  --color-text-tertiary: hsl(0, 0%, 50%);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Icons", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(255, 102, 41, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* Colors - Neutrals (Light Mode - Glassmorphic override) */
[data-theme="light"] {
  --color-bg-primary: hsl(240, 10%, 96%);
  --color-bg-gradient: linear-gradient(135deg, #f2f2f7 0%, #ffe9df 60%, #e5e5ea 100%);
  --color-bg-secondary: rgba(255, 255, 255, 0.45);
  --color-bg-tertiary: rgba(0, 0, 0, 0.02);
  --color-surface: rgba(255, 255, 255, 0.45);
  --color-surface-hover: rgba(0, 0, 0, 0.04);
  --color-glass-border: rgba(0, 0, 0, 0.06);
  --color-glass-border-focus: hsla(17, 100%, 58%, 0.5);
  --color-glass-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65), inset 0 -1px 0 rgba(0, 0, 0, 0.05);
  --color-success-gradient: linear-gradient(135deg, #16a34a 0%, #0f766e 100%);
  --color-success-glow: rgba(22, 163, 74, 0.2);

  --color-text-primary: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-tertiary: #86868b;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(31, 38, 135, 0.08);
  --shadow-glow: 0 0 20px rgba(255, 102, 41, 0.15);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg-gradient);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition-slow), color var(--transition-base);
}

/* ==========================================================================
   Layout
   ========================================================================== */
.mobile-header {
  display: none;
}

.app-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl);
}

/* ==========================================================================
   Sidebar
   ========================================================================== */
.sidebar {
  background: var(--color-surface);
  backdrop-filter: blur(35px) saturate(210%);
  -webkit-backdrop-filter: blur(35px) saturate(210%);
  border-radius: 20px;
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md), var(--color-glass-shadow);
  border: 1px solid var(--color-glass-border);
  height: fit-content;
  position: sticky;
  top: var(--spacing-xl);
}

.sidebar-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-glass-border);
}

.app-logo {
  max-width: 160px;
  height: auto;
  display: block;
  margin: 0 auto;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.app-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.app-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 400;
}

.nav-menu {
  list-style: none;
}

.nav-item {
  margin-bottom: var(--spacing-sm);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text-secondary);
  font-weight: 500;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 1px solid transparent;
}

.nav-link:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
  border-color: hsla(17, 100%, 58%, 0.3);
  transform: translateX(4px);
}

.nav-link.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  box-shadow: var(--shadow-glow);
  border-color: transparent;
}

.nav-icon {
  font-size: var(--font-size-lg);
}

/* ==========================================================================
   Main Content
   ========================================================================== */
.main-content {
  position: relative; /* For absolute elements like top-right controls */
  background: var(--color-surface);
  backdrop-filter: blur(35px) saturate(210%);
  -webkit-backdrop-filter: blur(35px) saturate(210%);
  border-radius: 20px;
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md), var(--color-glass-shadow);
  border: 1px solid var(--color-glass-border);
  min-height: calc(100vh - var(--spacing-xl) * 2);
  overflow: hidden; /* Clips negative margin header bar corner elements */
}

.view {
  display: none;
  animation: fadeIn var(--transition-base);
}

.view.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Section Headers */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid hsla(17, 100%, 58%, 0.2);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  border: none;
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

.btn-secondary {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
  border: 1px solid hsla(17, 100%, 58%, 0.3);
}

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

.btn-success {
  background: var(--color-success-gradient);
  color: white;
  box-shadow: 0 4px 15px var(--color-success-glow);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-success-glow), var(--shadow-sm);
  background: var(--color-success-gradient);
  opacity: 0.95;
}

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

.btn-danger:hover {
  background: hsl(0, 75%, 50%);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  background: var(--color-bg-secondary);
  backdrop-filter: blur(25px) saturate(190%);
  -webkit-backdrop-filter: blur(25px) saturate(190%);
  border-radius: 16px;
  padding: var(--spacing-lg);
  border: 1px solid var(--color-glass-border);
  box-shadow: var(--shadow-sm), var(--color-glass-shadow);
  transition: all var(--transition-base);
}

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

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.card-content {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-glass-border);
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-glass-border-focus);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* ==========================================================================
   Tables
   ========================================================================== */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid hsla(17, 100%, 58%, 0.15);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th {
  background: var(--color-bg-tertiary);
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid hsla(17, 100%, 58%, 0.2);
}

.table td {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid hsla(17, 100%, 58%, 0.1);
  color: var(--color-text-primary);
}

.table tbody tr {
  transition: background var(--transition-fast);
}

.table tbody tr:hover {
  background: var(--color-surface-hover);
}

/* ==========================================================================
   Dashboard Stats
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.stat-card {
  background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
  border-radius: 16px;
  padding: var(--spacing-xl);
  border: 1px solid var(--color-glass-border);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
  cursor: pointer;
}

.stat-card:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: var(--color-glass-border-focus);
  box-shadow: var(--shadow-md), var(--color-glass-shadow), 0 12px 24px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .stat-card:hover {
  box-shadow: var(--shadow-md), var(--color-glass-shadow), 0 12px 24px rgba(0, 0, 0, 0.05);
}

.stat-card:active {
  transform: scale(0.97) !important;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, hsla(17, 100%, 58%, 0.1), transparent);
  border-radius: 50%;
  transform: translate(30%, -30%);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
}

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   Birthday List
   ========================================================================== */
.birthday-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.birthday-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid hsla(17, 100%, 58%, 0.15);
  transition: all var(--transition-base);
}

.birthday-item:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.birthday-info h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.birthday-info p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.birthday-badge {
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-today {
  background: var(--color-success-gradient);
  color: white;
  box-shadow: 0 2px 8px var(--color-success-glow);
}

.badge-upcoming {
  background: var(--color-info);
  color: white;
}

/* ==========================================================================
   Modal
   ========================================================================== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  animation: fadeIn var(--transition-base);
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--color-bg-secondary);
  backdrop-filter: blur(35px) saturate(210%);
  -webkit-backdrop-filter: blur(35px) saturate(210%);
  border-radius: 20px;
  padding: var(--spacing-2xl);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg), var(--color-glass-shadow);
  border: 1px solid var(--color-glass-border);
  animation: slideUp var(--transition-base);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid hsla(17, 100%, 58%, 0.2);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast);
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-footer {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid hsla(17, 100%, 58%, 0.2);
}

/* ==========================================================================
   Empty State
   ========================================================================== */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-secondary);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.3;
}

.empty-state-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.empty-state-text {
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-lg);
}

/* ==========================================================================
   Alerts
   ========================================================================== */
.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  border-left: 4px solid;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.alert-success {
  background: hsla(140, 70%, 55%, 0.1);
  border-color: var(--color-success);
  color: var(--color-success);
}

.alert-error {
  background: hsla(0, 75%, 60%, 0.1);
  border-color: var(--color-error);
  color: var(--color-error);
}

.alert-info {
  background: hsla(200, 80%, 60%, 0.1);
  border-color: var(--color-info);
  color: var(--color-info);
}

.alert-warning {
  background: hsla(40, 90%, 60%, 0.1);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

/* ==========================================================================
   Image Preview
   ========================================================================== */
.image-preview {
  margin-top: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid hsla(17, 100%, 58%, 0.2);
}

.image-preview img,
.image-preview canvas {
  width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

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

.flex-gap {
  display: flex;
  gap: var(--spacing-md);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .app-container {
    grid-template-columns: 1fr;
    padding: var(--spacing-md);
  }

  .sidebar {
    position: relative;
    top: 0;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .modal-content {
    width: 95%;
    padding: var(--spacing-lg);
  }

  .table-container {
    font-size: var(--font-size-sm);
  }

  /* ==========================================================================
   New Components: Mode Toggle & Automation
   ========================================================================== */

  .badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
  }

  .badge-error {
    background: var(--color-error);
    color: white;
  }

  .badge-warning {
    background: var(--color-warning);
    color: white;
  }

  .badge-success {
    background: var(--color-success);
    color: white;
  }

  .badge-info {
    background: var(--color-info);
    color: white;
  }

  .qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
  }

  .qr-image-wrapper {
    position: relative;
    width: 250px;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #automation-qr-img {
    width: 100%;
    height: 100%;
    display: block;
  }

  .spinner {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, var(--color-primary) 0%, rgba(255,102,41,0.1) 70%, transparent 100%);
    -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 4px), #000 0);
    mask: radial-gradient(farthest-side, transparent calc(100% - 4px), #000 0);
    animation: spin-conic 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    position: relative;
  }

  @keyframes spin-conic {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }

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

  .btn-error:hover {
    background: hsl(0, 75%, 50%);
    box-shadow: 0 0 15px hsla(0, 75%, 60%, 0.4);
  }

  .method-toggle.inactive {
    background: var(--color-bg-tertiary);
    color: var(--color-text-tertiary);
    border-color: transparent;
    opacity: 0.6;
  }

  .status-box {
    background: var(--color-surface-hover);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid hsla(17, 100%, 58%, 0.2);
  }

  .text-sm {
    font-size: var(--font-size-sm);
  }

  .opacity-70 {
    opacity: 0.7;
  }

  .mb-md {
    margin-bottom: var(--spacing-md);
  }
}

/* ==========================================================================
   Premium Responsive Mobile Design System (OnePlus 12 & iPhone 15+)
   ========================================================================== */
@media (max-width: 768px) {
  /* 1. Global Container & Shell Spacing */
  .app-container {
    grid-template-columns: 1fr !important;
    padding: var(--spacing-sm) !important;
    gap: var(--spacing-md) !important;
    margin-top: 56px !important; /* Spacing for the top bar header */
    margin-bottom: 0 !important;
  }

  .main-content {
    padding: var(--spacing-md) var(--spacing-sm) !important;
    border-radius: var(--radius-lg) !important;
    border: 1px solid hsla(17, 100%, 58%, 0.1) !important;
    background: var(--color-bg-secondary) !important;
    box-shadow: var(--shadow-sm) !important;
    min-height: auto !important;
  }

  /* 2. Sleek Modern Mobile Header Bar */
  .mobile-header {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 56px !important;
    background: hsla(240, 15%, 8%, 0.85) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid hsla(17, 100%, 58%, 0.15) !important;
    padding: 0 var(--spacing-lg) !important;
    z-index: 1000 !important;
  }

  .mobile-app-logo {
    height: 24px !important;
    width: auto !important;
    display: block !important;
    object-fit: contain !important;
    margin: 0 !important;
    image-rendering: -webkit-optimize-contrast !important;
    image-rendering: crisp-edges !important;
  }

  /* Modern 3-bar hamburger icon styles */
  .menu-toggle-btn {
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
    width: 22px !important;
    height: 15px !important;
    background: transparent !important;
    border: none !important;
    cursor: pointer !important;
    padding: 0 !important;
    z-index: 1001 !important;
    outline: none !important;
  }

  .menu-toggle-btn .bar {
    width: 100% !important;
    height: 2px !important;
    background-color: var(--color-text-primary) !important;
    border-radius: 2px !important;
    transition: all 0.3s ease !important;
  }

  /* 3. Sliding Frosted Sidebar Drawer Navigation */
  .sidebar {
    position: fixed !important;
    top: 0 !important;
    left: -280px !important; /* Hidden off-screen by default */
    width: 280px !important;
    height: 100vh !important;
    z-index: 2000 !important;
    border-radius: 0 16px 16px 0 !important;
    border: none !important;
    border-right: 1px solid hsla(17, 100%, 58%, 0.2) !important;
    padding: var(--spacing-xl) !important;
    background: hsla(240, 15%, 8%, 0.96) !important;
    backdrop-filter: blur(30px) !important;
    -webkit-backdrop-filter: blur(30px) !important;
    box-shadow: 10px 0 40px rgba(0, 0, 0, 0.8) !important;
    display: block !important;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1) !important;
    top: 0 !important;
    position: fixed !important;
  }

  /* Slide in active drawer state */
  .sidebar.open {
    transform: translateX(280px) !important;
  }

  .sidebar-header {
    display: block !important; /* Re-show header details inside mobile sidebar */
    margin-bottom: var(--spacing-lg) !important;
    padding-bottom: var(--spacing-md) !important;
  }

  .sidebar nav {
    width: 100% !important;
  }

  .nav-menu {
    display: block !important; /* Reset vertical block links */
    margin: 0 !important;
    padding: 0 !important;
  }

  .nav-item {
    margin-bottom: var(--spacing-sm) !important;
  }

  .nav-link {
    flex-direction: row !important;
    align-items: center !important;
    justify-content: flex-start !important;
    gap: var(--spacing-md) !important;
    padding: var(--spacing-md) !important;
    font-size: var(--font-size-md) !important;
    font-weight: 500 !important;
    width: 100% !important;
    height: auto !important;
    border-radius: var(--radius-md) !important;
    color: var(--color-text-secondary) !important;
    background: transparent !important;
    border: 1px solid transparent !important;
    transition: all var(--transition-base) !important;
  }

  .nav-link:hover {
    background: var(--color-surface-hover) !important;
    color: var(--color-text-primary) !important;
  }

  .nav-link.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent)) !important;
    color: white !important;
    box-shadow: var(--shadow-glow) !important;
    font-weight: 600 !important;
  }

  .nav-link.active::after {
    display: none !important; /* Remove bottom nav indicator dot */
  }

  .nav-icon {
    font-size: var(--font-size-lg) !important;
  }

  .nav-link span:not(.nav-icon) {
    font-size: var(--font-size-md) !important;
  }

  /* Frosted Sidebar Backdrop dim overlay */
  .sidebar-overlay {
    display: block !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    background: rgba(0, 0, 0, 0.6) !important;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
    z-index: 1500 !important;
    opacity: 0 !important;
    pointer-events: none !important;
    transition: opacity 0.3s ease !important;
  }

  .sidebar-overlay.active {
    opacity: 1 !important;
    pointer-events: auto !important;
  }

  /* 4. Display Typography Downscaling (For OnePlus 12 & iPhone 15+) */
  .section-title {
    font-size: 1.45rem !important; /* scaled down from 2rem */
  }

  .card-title {
    font-size: 1.05rem !important;
  }

  .app-title {
    font-size: 1.35rem !important;
  }

  /* 5. Sleeker Stats Grid Adjustments */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: var(--spacing-sm) !important;
    margin-bottom: var(--spacing-lg) !important;
  }

  .stats-grid .stat-card:last-child {
    grid-column: span 2 !important; /* Third card spans full width */
  }

  .stat-card {
    padding: var(--spacing-md) !important;
  }

  .stat-label {
    font-size: 9px !important;
    margin-bottom: 2px !important;
  }

  .stat-value {
    font-size: 1.35rem !important; /* sleeker, less display footprint */
  }

  /* 6. Pure CSS Table to Premium Card Transformation */
  .table-container {
    border: none !important;
    border-radius: 0 !important;
  }

  .table {
    display: block !important;
    width: 100% !important;
  }

  .table thead {
    display: none !important; /* Hide column headers on mobile */
  }

  .table tbody, 
  .table tr, 
  .table td {
    display: block !important;
    width: 100% !important;
  }

  .table tr {
    background: var(--color-bg-secondary) !important;
    border: 1px solid hsla(17, 100%, 58%, 0.12) !important;
    border-radius: var(--radius-lg) !important;
    padding: var(--spacing-md) !important;
    margin-bottom: var(--spacing-md) !important;
    box-shadow: var(--shadow-sm) !important;
    transition: transform var(--transition-fast) !important;
  }

  .table tr:hover {
    border-color: hsla(17, 100%, 58%, 0.25) !important;
    transform: translateY(-1px) !important;
  }

  .table td {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    padding: 6px 0 !important;
    border-bottom: 1px solid hsla(17, 100%, 58%, 0.04) !important;
    font-size: 0.85rem !important;
  }

  .table td:last-child {
    border-bottom: none !important;
  }

  /* Inject mobile names using content attributes */
  .table td[data-label]::before {
    content: attr(data-label) !important;
    font-weight: 600 !important;
    color: var(--color-text-secondary) !important;
    font-size: 10px !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
  }

  /* Action Buttons Spacing */
  .table td[data-label="Actions"],
  .table td:last-child {
    justify-content: stretch !important;
    gap: var(--spacing-sm) !important;
    margin-top: var(--spacing-sm) !important;
    border-top: 1px solid hsla(17, 100%, 58%, 0.1) !important;
    padding-top: var(--spacing-sm) !important;
  }

  .table td[data-label="Actions"]::before {
    display: none !important; /* Hide actions text label to keep it neat */
  }

  .table td[data-label="Actions"] .btn,
  .table td:last-child .btn {
    flex: 1 !important;
    justify-content: center !important;
    font-size: 0.85rem !important;
    padding: 8px !important; /* slightly smaller button size */
    min-height: 38px !important;
  }

  /* 7. Mobile Bottom Sheet Modals (Android/iOS Drawer style) */
  .modal-content {
    width: 100% !important;
    max-width: 100% !important;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0 !important;
    padding: var(--spacing-lg) !important;
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    max-height: 86vh !important;
    overflow-y: auto !important;
    border: none !important;
    border-top: 2px solid hsla(17, 100%, 58%, 0.35) !important;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.8) !important;
    animation: slideUpSheet var(--transition-slow) cubic-bezier(0.16, 1, 0.3, 1) !important;
  }

  @keyframes slideUpSheet {
    from {
      transform: translateY(100%);
    }
    to {
      transform: translateY(0);
    }
  }

  .modal-header {
    margin-bottom: var(--spacing-md) !important;
    padding-bottom: var(--spacing-sm) !important;
  }

  .modal-footer {
    display: flex !important;
    flex-direction: column-reverse !important;
    gap: var(--spacing-sm) !important;
    margin-top: var(--spacing-lg) !important;
    padding-top: var(--spacing-md) !important;
  }

  .modal-footer .btn {
    width: 100% !important;
    justify-content: center !important;
    padding: 10px !important;
    min-height: 38px !important;
  }

  /* 8. Sleeker Buttons & Touch targets */
  .btn {
    min-height: 38px !important; /* highly modern, compact & click-friendly size */
    font-size: 0.88rem !important;
    padding: var(--spacing-sm) var(--spacing-md) !important;
  }

  .form-input, .form-select, .form-textarea {
    min-height: 40px !important;
    font-size: 0.92rem !important;
    padding: 8px 12px !important;
  }

  .form-textarea {
    min-height: 80px !important;
  }

  /* Form Toolbar & Controls Optimization */
  .template-toolbar {
    gap: 6px !important;
    padding: 6px !important;
  }

  .formatting-group {
    flex: auto !important;
    justify-content: space-between !important;
  }

  .template-toolbar select {
    max-width: 110px !important;
  }

  /* Section Header responsive wrapping */
  .section-header {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: var(--spacing-sm) !important;
    margin-bottom: var(--spacing-lg) !important;
    padding-bottom: var(--spacing-sm) !important;
  }

  .section-header .flex-gap {
    width: 100% !important;
    display: flex !important;
  }

  .section-header .flex-gap .btn {
    flex: 1 !important;
    justify-content: center !important;
  }

  .section-header .btn {
    width: 100% !important;
    justify-content: center !important;
  }

  /* Settings configs */
  .flex-gap {
    flex-direction: column !important;
    gap: var(--spacing-sm) !important;
  }

  .flex-gap .btn {
    width: 100% !important;
    justify-content: center !important;
  }

  /* Custom grid configurations */
  .grid-2, .grid-3 {
    grid-template-columns: 1fr !important;
    gap: var(--spacing-md) !important;
  }

  /* Canvas responsiveness scale indicator */
  .image-preview {
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-sm) !important;
  }
}

/* ==========================================================================
   Apple Premium UI Enhancement: Active Scale & Snappy Transitions
   ========================================================================== */
.btn, .control-btn, .nav-link, .tab-btn {
  transition: transform 0.1s cubic-bezier(0.25, 1, 0.5, 1), box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease !important;
}

.btn:active, .control-btn:active, .nav-link:active, .tab-btn:active {
  transform: scale(0.96) !important;
}

/* Premium Global Toolbar Window Header */
.global-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: calc(-1 * var(--spacing-2xl));
  margin-left: calc(-1 * var(--spacing-2xl));
  margin-right: calc(-1 * var(--spacing-2xl));
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-md) var(--spacing-2xl);
  border-bottom: 1px solid var(--color-glass-border);
  background: rgba(255, 255, 255, 0.015);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .global-header-bar {
  background: rgba(0, 0, 0, 0.015);
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.03);
}

.user-profile-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.04);
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--color-glass-border);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}

[data-theme="light"] .user-profile-badge {
  background: rgba(0, 0, 0, 0.03);
}

.user-avatar {
  font-size: 1rem;
}

.user-name {
  color: var(--color-text-primary);
  font-weight: 600;
}

.header-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.control-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-glass-border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm), var(--color-glass-shadow);
}

[data-theme="light"] .control-btn {
  background: rgba(0, 0, 0, 0.03);
}

.control-btn:hover {
  transform: scale(1.08);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

/* Background Glowing Mesh Orbs */
.bg-glow-1, .bg-glow-2, .bg-glow-3 {
  position: fixed;
  width: 550px;
  height: 550px;
  border-radius: 50%;
  filter: blur(140px);
  z-index: 0;
  opacity: 0.35;
  pointer-events: none;
  animation: float-mesh 28s infinite alternate;
}

[data-theme="light"] .bg-glow-1,
[data-theme="light"] .bg-glow-2,
[data-theme="light"] .bg-glow-3 {
  opacity: 0.25;
}

.bg-glow-1 {
  background: radial-gradient(circle, var(--color-primary) 0%, rgba(0,0,0,0) 70%);
  top: -10%;
  left: -10%;
}

.bg-glow-2 {
  background: radial-gradient(circle, var(--color-accent) 0%, rgba(0,0,0,0) 70%);
  bottom: -10%;
  right: -10%;
  animation-delay: -7s;
}

.bg-glow-3 {
  background: radial-gradient(circle, #ff6629 0%, rgba(0,0,0,0) 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-duration: 35s;
  animation-delay: -14s;
}

@keyframes float-mesh {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(80px, 50px) scale(1.1); }
  100% { transform: translate(-40px, -70px) scale(0.9); }
}

@media (max-width: 768px) {
  .global-header-bar {
    display: none !important;
  }
}

/* ==========================================================================
   Apple Premium UI Enhancement: Depth Layering, Sheens, and Sleek Inputs
   ========================================================================== */

/* Specular Shimmer Sheen for Primary Buttons */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 200%;
  height: 100%;
  background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0) 100%);
  transform: skewX(-25deg);
  transition: 0.75s ease;
  pointer-events: none;
  opacity: 0;
}

.btn-primary:hover::after {
  left: 125%;
  opacity: 1;
  transition: all 0.75s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Optical Depth Elevate for Cards on Hover */
.card {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, background 0.3s ease !important;
}

.card:hover {
  transform: translateY(-4px) scale(1.015) !important;
  box-shadow: var(--shadow-md), var(--color-glass-shadow), 0 12px 24px rgba(0, 0, 0, 0.12) !important;
  border-color: var(--color-glass-border-focus) !important;
}

[data-theme="light"] .card:hover {
  box-shadow: var(--shadow-md), var(--color-glass-shadow), 0 12px 24px rgba(0, 0, 0, 0.05) !important;
}

/* Shimmering Progress Bar */
#bulk-progress-container > div:last-child {
  height: 6px !important;
  background: var(--color-bg-secondary) !important;
  border: 1px solid var(--color-glass-border) !important;
  border-radius: 10px !important;
  overflow: hidden;
  box-shadow: var(--color-glass-shadow) !important;
}

#bulk-progress-bar {
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%) !important;
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

#bulk-progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.4) 50%, rgba(255,255,255,0) 100%);
  animation: progress-shimmer 1.5s infinite;
  background-size: 200% 100%;
}

@keyframes progress-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Apple Sleek Double Focus State for Inputs */
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary) !important;
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 4px var(--color-glass-border-focus) !important;
  background: var(--color-bg-secondary) !important;
}