/**
 * style.css
 */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");

:root {
  /* Color Palette - Dark Theme */
  --bg-color: hsl(220, 10%, 10%);
  --surface-color: hsl(220, 12%, 15%);
  --surface-hover: hsl(220, 12%, 18%);
  --border-color: hsl(220, 14%, 25%);

  --text-primary: hsl(0, 0%, 98%);
  --text-secondary: hsl(220, 10%, 65%);
  --text-muted: hsl(220, 8%, 45%);

  /* Brand Accent - Amber Gold */
  --accent-color: hsl(40, 90%, 55%);
  --accent-hover: hsl(40, 95%, 45%);
  --accent-muted: hsl(40, 90%, 55%, 0.15);

  --error: hsl(0, 80%, 60%);
  --success: hsl(140, 60%, 50%);

  /* Typography */
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* Layout */
  --sidebar-width: 380px;
  --header-height: 64px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
}

/* ========== Typography Utils ========== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
}
.text-sm {
  font-size: 0.875rem;
}
.text-xs {
  font-size: 0.75rem;
}
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.font-mono {
  font-family: var(--font-mono);
}
.font-bold {
  font-weight: 700;
}
.font-medium {
  font-weight: 500;
}

.text-muted {
  color: var(--text-muted);
}
.text-secondary {
  color: var(--text-secondary);
}
.text-accent {
  color: var(--accent-color);
}
.text-error {
  color: var(--error);
}

/* ========== Layout Utils ========== */
.flex {
  display: flex;
}
.flex-col {
  display: flex;
  flex-direction: column;
}
.flex-wrap {
  flex-wrap: wrap;
}
.items-center {
  align-items: center;
}
.justify-between {
  justify-content: space-between;
}
.justify-center {
  justify-content: center;
}
.justify-end {
  justify-content: flex-end;
}
.gap-1 {
  gap: 0.25rem;
}
.gap-2 {
  gap: 0.5rem;
}
.gap-3 {
  gap: 0.75rem;
}
.gap-4 {
  gap: 1rem;
}
.gap-6 {
  gap: 1.5rem;
}

.grid {
  display: grid;
}
.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.w-full {
  width: 100%;
}
.h-full {
  height: 100%;
}
.w-4 {
  width: 1rem;
}
.h-4 {
  height: 1rem;
}
.w-5 {
  width: 1.25rem;
}
.h-5 {
  height: 1.25rem;
}
.w-6 {
  width: 1.5rem;
}
.h-6 {
  height: 1.5rem;
}

.p-2 {
  padding: 0.5rem;
}
.p-3 {
  padding: 0.75rem;
}
.p-4 {
  padding: 1rem;
}
.p-5 {
  padding: 1.25rem;
}
.p-6 {
  padding: 1.5rem;
}
.px-3 {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}
.px-4 {
  padding-left: 1rem;
  padding-right: 1rem;
}
.py-2 {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}
.py-3 {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}
.mt-2 {
  margin-top: 0.5rem;
}
.mt-4 {
  margin-top: 1rem;
}
.mb-2 {
  margin-bottom: 0.5rem;
}
.mb-4 {
  margin-bottom: 1rem;
}
.ml-auto {
  margin-left: auto;
}

.relative {
  position: relative;
}
.absolute {
  position: absolute;
}
.fixed {
  position: fixed;
}
.inset-0 {
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

.z-10 {
  z-index: 10;
}
.z-20 {
  z-index: 20;
}
.z-50 {
  z-index: 50;
}

.hidden {
  display: none !important;
}
.block {
  display: block;
}
.opacity-0 {
  opacity: 0;
}
.opacity-100 {
  opacity: 1;
}
.pointer-events-none {
  pointer-events: none;
}
.cursor-pointer {
  cursor: pointer;
}
.cursor-not-allowed {
  cursor: not-allowed;
}

.w-8 { width: 2rem; }
.h-8 { height: 2rem; }
.w-16 { width: 4rem; }
.h-16 { height: 4rem; }
.w-24 { width: 6rem; }
.h-24 { height: 6rem; }
.w-px { width: 1px; }

.ml-2 { margin-left: 0.5rem; }
.mr-2 { margin-right: 0.5rem; }
.-ml-1 { margin-left: -0.25rem; }
.mt-1 { margin-top: 0.25rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mt-8 { margin-top: 2rem; }

.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }

.overflow-hidden { overflow: hidden; }
.overflow-y-auto { overflow-y: auto; }

.object-cover { object-fit: cover; }
.object-contain { object-fit: contain; }

.items-start { align-items: flex-start; }
.content-start { align-content: flex-start; }
.flex-shrink-0 { flex-shrink: 0; }
.space-y-5 > * + * { margin-top: 1.25rem; }

.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.font-semibold { font-weight: 600; }
.leading-relaxed { line-height: 1.625; }
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.border-none { border: none !important; }
.border-dashed { border-style: dashed; }

.aspect-square { aspect-ratio: 1 / 1; }

.ring-1 { box-shadow: 0 0 0 1px var(--tw-ring-color, currentColor); }
.ring-2 { box-shadow: 0 0 0 2px var(--tw-ring-color, currentColor); }
.ring-offset-2 { box-shadow: 0 0 0 2px var(--tw-ring-offset-color, white), 0 0 0 4px var(--tw-ring-color, currentColor); }

.bg-white\/10 { background-color: rgba(255, 255, 255, 0.1); }
.bg-black\/20 { background-color: rgba(0, 0, 0, 0.2); }
.bg-black\/40 { background-color: rgba(0, 0, 0, 0.4); }
.bg-black\/60 { background-color: rgba(0, 0, 0, 0.6); }
.bg-black\/80 { background-color: rgba(0, 0, 0, 0.8); }

.bg-accent-muted { background-color: var(--accent-muted); }
.border-border { border-color: var(--border-color); }
.border-accent { border-color: var(--accent-color); }
.bg-border { background-color: var(--border-color); }

.ring-accent { --tw-ring-color: var(--accent-color); }
.ring-offset-bg { --tw-ring-offset-color: var(--bg-color); }

/* ========== Borders & Backgrounds ========== */
.border {
  border: 1px solid var(--border-color);
}
.border-b {
  border-bottom: 1px solid var(--border-color);
}
.border-r {
  border-right: 1px solid var(--border-color);
}
.border-transparent {
  border-color: transparent;
}
.rounded-md {
  border-radius: var(--radius-sm);
}
.rounded-lg {
  border-radius: var(--radius-md);
}
.rounded-xl {
  border-radius: var(--radius-lg);
}
.rounded-full {
  border-radius: var(--radius-full);
}

.bg-surface {
  background-color: var(--surface-color);
}
.bg-surface-hover {
  background-color: var(--surface-hover);
}
.bg-black\/50 {
  background-color: rgba(0, 0, 0, 0.5);
}
.bg-black\/30 {
  background-color: rgba(0, 0, 0, 0.3);
}
.bg-white\/20 {
  background-color: rgba(255, 255, 255, 0.2);
}
.bg-accent {
  background-color: var(--accent-color);
}
.backdrop-blur-sm {
  backdrop-filter: blur(4px);
}
.backdrop-blur-md {
  backdrop-filter: blur(8px);
}

/* ========== Transitions & Animations ========== */
.transition-all {
  transition: all 0.2s ease;
}
.transition-colors {
  transition:
    background-color 0.2s,
    color 0.2s,
    border-color 0.2s;
}
.transition-opacity {
  transition: opacity 0.2s;
}
.transition-transform {
  transition: transform 0.2s ease-out;
}
.transform {
  transform: translate(var(--tw-translate-x, 0), var(--tw-translate-y, 0))
    scale(var(--tw-scale-x, 1), var(--tw-scale-y, 1));
}
.translate-y-0 {
  --tw-translate-y: 0px;
}
.translate-y-full {
  --tw-translate-y: 100%;
}
.translate-x-full {
  --tw-translate-x: 100%;
}
.translate-x-0 {
  --tw-translate-x: 0px;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}
.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
.animate-spin {
  animation: spin 1s linear infinite;
}

/* ========== Components ========== */

/* App Layout */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.app-header {
  height: var(--header-height);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  background-color: var(--surface-color);
  flex-shrink: 0;
  z-index: 20;
}

.app-main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.sidebar {
  width: var(--sidebar-width);
  border-right: 1px solid var(--border-color);
  background-color: var(--surface-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
}

.gallery-area {
  flex: 1;
  position: relative;
  overflow-y: auto;
  background-color: var(--bg-color);
  padding: 1.5rem;
}

/* Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
}
.brand-icon {
  color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Forms & Inputs */
.input-group {
  margin-bottom: 1.25rem;
}

.input-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  outline: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

.form-control:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px var(--accent-muted);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--accent-color);
  color: #000;
  font-weight: 600;
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 1rem;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--accent-muted);
}

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

.btn-secondary:hover {
  background-color: var(--surface-hover);
  border-color: var(--text-muted);
}

.btn-icon {
  padding: 0.4rem;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
}

.btn-icon:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

/* Option Selector (Radio Buttons as UI) */
.option-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.option-btn {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-color);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}

.option-btn:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.option-btn.active {
  background-color: var(--accent-muted);
  border-color: var(--accent-color);
  color: var(--accent-color);
  font-weight: 500;
}

/* File Upload Zone */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-color);
  min-height: 120px;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--text-muted);
  background: var(--surface-color);
}

/* Thumbnail Queue Component */
.thumb-queue {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.5rem 0;
  align-content: flex-start;
}
.thumb-item {
  position: relative;
  width: 4rem;
  height: 4rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}
.thumb-add {
  width: 4rem;
  height: 4rem;
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s;
  flex-shrink: 0;
}
.thumb-add:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* Custom Checkbox for Gallery */
.checkbox-wrapper input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
}

/* Masonry / Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

/* Group hover support for cards */
.group:hover .group-hover\:flex {
  display: flex;
}
.group:hover .group-hover\:opacity-100 {
  opacity: 1;
}

/* Modal & Overlays */
.modal-overlay {
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

/* Info Panel Slider */
.sliding-panel {
  width: 350px;
  background-color: var(--surface-color);
  border-left: 1px solid var(--border-color);
  box-shadow: -10px 0 25px rgba(0, 0, 0, 0.2);
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .app-main {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: 50%;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .gallery-area {
    height: 50%;
  }

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