/*
Theme Name: MyGallery
Theme URI: https://mygallery.app
Author: MyGallery Team
Description: A stunning mobile-first media gallery WordPress theme with React-powered UI, PWA support, category-based organization, and an extraordinary visual experience. No plugins required.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: mygallery
Tags: gallery, media, pwa, mobile-first, react, custom-login
*/

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  /* Brand Palette */
  --bg-void:        #08090d;
  --bg-deep:        #0e1018;
  --bg-surface:     #13151e;
  --bg-raised:      #1a1d2a;
  --bg-hover:       #1f2335;

  --accent-1:       #7c6ff7;   /* electric violet */
  --accent-2:       #f7576a;   /* coral flash */
  --accent-3:       #4ee8c4;   /* mint spark */
  --accent-gold:    #f9c846;   /* amber highlight */

  --text-primary:   #f0f1f8;
  --text-secondary: #8b8fa8;
  --text-muted:     #4a4d63;

  --border:         rgba(124,111,247,0.18);
  --border-strong:  rgba(124,111,247,0.4);
  --glass:          rgba(19,21,30,0.85);
  --glass-light:    rgba(255,255,255,0.04);

  --radius-sm:      8px;
  --radius-md:      14px;
  --radius-lg:      22px;
  --radius-xl:      32px;
  --radius-full:    9999px;

  --shadow-glow:    0 0 40px rgba(124,111,247,0.25);
  --shadow-card:    0 8px 32px rgba(0,0,0,0.5);
  --shadow-float:   0 24px 64px rgba(0,0,0,0.6);

  --font-display:   'Syne', 'Space Grotesk', system-ui, sans-serif;
  --font-body:      'Inter', system-ui, sans-serif;
  --font-mono:      'JetBrains Mono', monospace;

  --grid-size:      160px;
  --transition:     0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-void);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ============================================================
   LOGIN PAGE
   ============================================================ */
body.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg-void);
  position: relative;
  overflow: hidden;
}

.login-aurora {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.aurora-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: orbFloat 8s ease-in-out infinite;
}
.aurora-orb:nth-child(1) {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #7c6ff7 0%, transparent 70%);
  top: -200px; left: -200px;
  animation-delay: 0s;
}
.aurora-orb:nth-child(2) {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #f7576a 0%, transparent 70%);
  bottom: -150px; right: -150px;
  animation-delay: -3s;
}
.aurora-orb:nth-child(3) {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #4ee8c4 0%, transparent 70%);
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  animation-delay: -6s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -40px) scale(1.05); }
  66% { transform: translate(-20px, 30px) scale(0.95); }
}

.login-grid-bg {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(124,111,247,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,111,247,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
  pointer-events: none;
}

.login-card {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 440px;
  margin: 20px;
  background: var(--glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  box-shadow: var(--shadow-float), inset 0 1px 0 rgba(255,255,255,0.07);
}

.login-logo-wrap {
  text-align: center;
  margin-bottom: 36px;
}

.login-logo-icon {
  width: 72px; height: 72px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  box-shadow: 0 8px 32px rgba(124,111,247,0.4);
  position: relative;
}

.login-logo-icon::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  z-index: -1;
  filter: blur(12px);
  opacity: 0.6;
}

.login-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #f0f1f8 0%, var(--accent-1) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

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

.login-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.login-input-wrap {
  position: relative;
}

.login-input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 16px;
  pointer-events: none;
  transition: color var(--transition);
}

.login-input {
  width: 100%;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 14px 14px 42px;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  -webkit-appearance: none;
}

.login-input:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(124,111,247,0.2);
}

.login-input:focus + .login-input-icon,
.login-input-wrap:focus-within .login-input-icon {
  color: var(--accent-1);
}

.login-btn {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: white;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  letter-spacing: 0.02em;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  position: relative;
  overflow: hidden;
  margin-top: 8px;
}

.login-btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}

.login-btn:hover::before { left: 100%; }
.login-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(124,111,247,0.45);
}
.login-btn:active { transform: translateY(0); }

.login-error {
  background: rgba(247,87,106,0.12);
  border: 1px solid rgba(247,87,106,0.3);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: #ff8a98;
  font-size: 0.85rem;
  margin-bottom: 16px;
  display: none;
}
.login-error.show { display: block; }

.login-footer-text {
  text-align: center;
  margin-top: 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   APP SHELL / DASHBOARD
   ============================================================ */
body.dashboard-page {
  background: var(--bg-void);
}

/* Topbar */
.app-topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 60px;
  background: rgba(8,9,13,0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 12px;
}

.topbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.topbar-logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.topbar-spacer { flex: 1; }

.topbar-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: var(--glass-light);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all var(--transition);
}
.topbar-btn:hover {
  background: var(--bg-raised);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.topbar-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  border: 2px solid var(--border-strong);
  transition: box-shadow var(--transition);
}
.topbar-avatar:hover { box-shadow: 0 0 0 3px rgba(124,111,247,0.3); }

/* Sidebar */
.app-sidebar {
  position: fixed;
  top: 60px;
  left: 0;
  bottom: 0;
  width: 72px;
  background: var(--bg-deep);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0;
  gap: 8px;
  z-index: 900;
  transition: width var(--transition);
}

.app-sidebar.expanded { width: 220px; }

.sidebar-item {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: all var(--transition);
  position: relative;
  cursor: pointer;
  text-decoration: none;
}

.sidebar-item:hover {
  background: var(--bg-raised);
  color: var(--text-primary);
}

.sidebar-item.active {
  background: linear-gradient(135deg, rgba(124,111,247,0.2), rgba(247,87,106,0.1));
  color: var(--accent-1);
  box-shadow: inset 0 0 0 1px rgba(124,111,247,0.3);
}

.sidebar-tip {
  position: absolute;
  left: 60px;
  background: var(--bg-raised);
  color: var(--text-primary);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition);
  border: 1px solid var(--border);
}
.sidebar-item:hover .sidebar-tip { opacity: 1; }

/* Main content area */
.app-main {
  margin-top: 60px;
  margin-left: 72px;
  min-height: calc(100vh - 60px);
  padding: 24px;
  transition: margin-left var(--transition);
}

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-xl);
  padding: 48px 24px;
  text-align: center;
  background: var(--glass-light);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  margin-bottom: 32px;
}

.upload-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(124,111,247,0.05), rgba(78,232,196,0.05));
  opacity: 0;
  transition: opacity var(--transition);
}

.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent-1);
  background: rgba(124,111,247,0.06);
}
.upload-zone:hover::before, .upload-zone.drag-over::before { opacity: 1; }

.upload-icon-wrap {
  width: 80px; height: 80px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(124,111,247,0.15), rgba(78,232,196,0.1));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  border: 1px solid var(--border-strong);
  animation: uploadPulse 2s ease-in-out infinite;
}

@keyframes uploadPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(124,111,247,0.3); }
  50% { box-shadow: 0 0 0 12px rgba(124,111,247,0); }
}

.upload-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.upload-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.upload-formats {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.format-tag {
  padding: 4px 10px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Category Input */
.category-row {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.field-group {
  flex: 1;
  min-width: 180px;
}

.field-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: block;
}

.field-input {
  width: 100%;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}

.field-input:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(124,111,247,0.18);
}

.field-input::placeholder { color: var(--text-muted); }

.upload-submit-btn {
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: white;
  font-weight: 700;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.upload-submit-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(124,111,247,0.4);
}

/* Grid Controls */
.grid-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.grid-controls-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.size-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 140px;
  height: 4px;
  border-radius: 2px;
  background: var(--bg-raised);
  outline: none;
  cursor: pointer;
}

.size-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  cursor: pointer;
  box-shadow: 0 0 8px rgba(124,111,247,0.5);
}

.size-slider::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  cursor: pointer;
  border: none;
}

.size-display {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-3);
  min-width: 60px;
}

.view-toggle {
  display: flex;
  background: var(--bg-raised);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 2px;
  margin-left: auto;
}

.view-btn {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-muted);
  transition: all var(--transition);
}
.view-btn.active {
  background: var(--accent-1);
  color: white;
}

/* Category Section */
.category-section {
  margin-bottom: 40px;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.category-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.category-badge {
  padding: 3px 10px;
  background: rgba(124,111,247,0.15);
  border: 1px solid rgba(124,111,247,0.25);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--accent-1);
}

.category-divider {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Media Grid */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--grid-size), 1fr));
  gap: 10px;
}

.media-cell {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  aspect-ratio: 1;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  group: '';
}

.media-cell:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-card);
  border-color: var(--border-strong);
  z-index: 10;
}

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

.media-cell-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(8,9,13,0.85) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 8px;
}

.media-cell:hover .media-cell-overlay { opacity: 1; }

.media-cell-actions {
  display: flex;
  gap: 6px;
  justify-content: center;
}

.cell-btn {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all var(--transition);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
}

.cell-btn-zoom {
  background: rgba(124,111,247,0.8);
  color: white;
}
.cell-btn-zoom:hover { background: var(--accent-1); }

.cell-btn-delete {
  background: rgba(247,87,106,0.8);
  color: white;
}
.cell-btn-delete:hover { background: var(--accent-2); }

.media-cell-type {
  position: absolute;
  top: 6px; right: 6px;
  background: rgba(8,9,13,0.7);
  backdrop-filter: blur(4px);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.65rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  opacity: 0;
  transition: opacity var(--transition);
}
.media-cell:hover .media-cell-type { opacity: 1; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(8,9,13,0.97);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox.open {
  opacity: 1;
  pointer-events: all;
}

.lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  transform: scale(0.92);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}

.lightbox.open .lightbox-inner { transform: scale(1); }

.lightbox-media {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 120px rgba(0,0,0,0.9);
  object-fit: contain;
}

.lightbox-close {
  position: fixed;
  top: 20px; right: 20px;
  width: 44px; height: 44px;
  background: var(--bg-raised);
  border-radius: 50%;
  color: white;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.lightbox-close:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.lightbox-info {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 92vw;
}

/* ── Lightbox navigation arrows ── */
.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(19, 21, 30, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 2rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  z-index: 9100;
  user-select: none;
  -webkit-user-select: none;
}

.lightbox-nav:hover {
  background: var(--accent-1);
  border-color: var(--accent-1);
  box-shadow: 0 0 24px rgba(124,111,247,0.5);
  transform: translateY(-50%) scale(1.08);
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-nav span {
  display: block;
  position: relative;
  top: -1px;
}

@media (max-width: 600px) {
  .lightbox-nav {
    width: 42px;
    height: 42px;
    font-size: 1.6rem;
  }
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }
  .lightbox-info  { font-size: 0.75rem; padding: 8px 14px; bottom: 80px; }
}

/* Upload Progress */
.upload-progress-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  margin-bottom: 8px;
}

.upload-progress-bar-wrap {
  flex: 1;
  height: 4px;
  background: var(--bg-raised);
  border-radius: 2px;
  overflow: hidden;
}

.upload-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-3));
  border-radius: 2px;
  width: 0%;
  transition: width 0.3s ease;
}

.upload-progress-name {
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px;
}

/* Stats Bar */
.stats-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.stat-card {
  flex: 1;
  min-width: 120px;
  padding: 16px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
}
.stat-card:nth-child(1)::before { background: var(--accent-1); }
.stat-card:nth-child(2)::before { background: var(--accent-2); }
.stat-card:nth-child(3)::before { background: var(--accent-3); }
.stat-card:nth-child(4)::before { background: var(--accent-gold); }

.stat-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-top: 2px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  backdrop-filter: blur(12px);
  border: 1px solid;
  box-shadow: var(--shadow-card);
  animation: toastIn 0.4s cubic-bezier(0.34,1.56,0.64,1);
  max-width: 320px;
}

.toast.success {
  background: rgba(78,232,196,0.12);
  border-color: rgba(78,232,196,0.3);
  color: var(--accent-3);
}
.toast.error {
  background: rgba(247,87,106,0.12);
  border-color: rgba(247,87,106,0.3);
  color: #ff8a98;
}
.toast.info {
  background: rgba(124,111,247,0.12);
  border-color: rgba(124,111,247,0.3);
  color: var(--accent-1);
}

@keyframes toastIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-muted);
}
.empty-state-icon { font-size: 48px; margin-bottom: 12px; opacity: 0.5; }
.empty-state-text { font-size: 0.95rem; }

/* Settings Panel */
.settings-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
  margin-bottom: 28px;
}

.settings-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.settings-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-1); }

/* Selection */
::selection { background: rgba(124,111,247,0.3); color: white; }

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 2px;
}

/* ============================================================
   MOBILE RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .app-sidebar { display: none; }
  .app-main { margin-left: 0; padding: 16px; }
  .category-row { flex-direction: column; }
  .upload-submit-btn { width: 100%; justify-content: center; }
  .stats-bar { gap: 8px; }
  .stat-card { min-width: 100px; padding: 12px 14px; }
  .stat-value { font-size: 1.4rem; }
  .login-card { padding: 32px 24px; }
  .grid-controls { gap: 8px; }
  .size-slider { width: 100px; }

  /* Mobile bottom nav */
  .mobile-nav {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 900;
    background: rgba(14,16,24,0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border);
    padding: 8px 0 env(safe-area-inset-bottom, 8px);
    justify-content: space-around;
  }

  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 12px;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color var(--transition);
    cursor: pointer;
  }
  .mobile-nav-item .nav-icon { font-size: 22px; }
  .mobile-nav-item.active { color: var(--accent-1); }

  .mobile-upload-fab {
    width: 56px; height: 56px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-top: -28px;
    box-shadow: 0 4px 20px rgba(124,111,247,0.5);
    position: relative;
    top: -4px;
  }

  .app-main { padding-bottom: 80px; }
  .toast-container { right: 12px; bottom: 90px; }
}

@media (min-width: 769px) {
  .mobile-nav { display: none; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.skeleton {
  background: linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-raised) 50%, var(--bg-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

.fade-up {
  animation: fadeUp 0.4s ease both;
}

.fade-up:nth-child(1) { animation-delay: 0.05s; }
.fade-up:nth-child(2) { animation-delay: 0.1s; }
.fade-up:nth-child(3) { animation-delay: 0.15s; }
.fade-up:nth-child(4) { animation-delay: 0.2s; }

/* PWA install prompt */
.pwa-banner {
  background: linear-gradient(135deg, rgba(124,111,247,0.15), rgba(78,232,196,0.1));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}
.pwa-banner-text { flex: 1; font-size: 0.9rem; }
.pwa-banner-title { font-weight: 700; margin-bottom: 2px; }
.pwa-banner-sub { color: var(--text-secondary); font-size: 0.8rem; }
.pwa-install-btn {
  padding: 8px 18px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  color: white;
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: transform var(--transition);
}
.pwa-install-btn:hover { transform: scale(1.05); }

/* Confirm dialog */
.confirm-overlay {
  position: fixed;
  inset: 0;
  z-index: 8000;
  background: rgba(8,9,13,0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.confirm-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.confirm-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 360px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-float);
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.confirm-overlay.open .confirm-box { transform: scale(1); }
.confirm-icon { font-size: 40px; margin-bottom: 12px; }
.confirm-title { font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.confirm-text { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 24px; }
.confirm-btns { display: flex; gap: 10px; justify-content: center; }
.confirm-btn-cancel {
  padding: 10px 24px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: 600;
  transition: all var(--transition);
}
.confirm-btn-cancel:hover { border-color: var(--border-strong); color: var(--text-primary); }
.confirm-btn-delete {
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--accent-2), #c93048);
  color: white;
  border-radius: var(--radius-md);
  font-weight: 700;
  transition: transform var(--transition), box-shadow var(--transition);
}
.confirm-btn-delete:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(247,87,106,0.4);
}