/* ============================================================
   AI AutoCute — Design System
   ============================================================ */
:root {
  --bg-0: #060608;
  --bg-1: #0a0a0f;
  --bg-2: #111118;
  --bg-3: #1a1a24;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text-0: #fafafa;
  --text-1: #d4d4d8;
  --text-2: #a1a1aa;
  --text-3: #71717a;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-600: #d97706;
  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;
  --pink-400: #f472b6;
  --pink-500: #ec4899;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --red-400: #f87171;
  --gradient-1: linear-gradient(135deg, #f59e0b 0%, #ec4899 50%, #06b6d4 100%);
  --gradient-mesh: radial-gradient(at 20% 20%, rgba(245, 158, 11, 0.18) 0px, transparent 50%),
                   radial-gradient(at 80% 0%, rgba(236, 72, 153, 0.15) 0px, transparent 50%),
                   radial-gradient(at 0% 80%, rgba(6, 182, 212, 0.15) 0px, transparent 50%);
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  --font-sans: 'Plus Jakarta Sans', 'Sarabun', system-ui, -apple-system, sans-serif;
  --font-th: 'Sarabun', 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-th);
  background: var(--bg-0);
  color: var(--text-1);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--amber-500); color: var(--bg-0); }

.bg-mesh {
  position: fixed; inset: 0; z-index: -1; background: var(--bg-0);
}
.bg-mesh::before {
  content: ''; position: absolute; inset: 0;
  background: var(--gradient-mesh);
  animation: meshFloat 20s ease-in-out infinite;
}
.bg-mesh::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
@keyframes meshFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-2%, 1%) scale(1.05); }
  66% { transform: translate(1%, -1%) scale(0.95); }
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* ============================================================
   Header
   ============================================================ */
.header {
  position: sticky; top: 0; z-index: 50;
  height: 64px;
  display: flex; align-items: center;
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  background: rgba(6, 6, 8, 0.6);
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}
.header-inner {
  max-width: 900px; width: 100%; margin: 0 auto;
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--gradient-1);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; box-shadow: 0 0 30px rgba(245, 158, 11, 0.4);
}
.logo-text { font-weight: 800; font-size: 17px; color: var(--text-0); letter-spacing: -0.01em; }
.logo-text small {
  font-size: 10px; font-weight: 500; color: var(--text-3);
  font-family: var(--font-mono); letter-spacing: 0.06em;
  text-transform: uppercase; margin-left: 4px;
}
.header-right { display: flex; gap: 12px; align-items: center; }
.header-status {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--text-2);
  font-family: var(--font-mono);
}
.header-status .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green-400);
  box-shadow: 0 0 8px var(--green-400);
  animation: pulse 2s ease-in-out infinite;
}
.header-status.error .dot { background: var(--red-400); box-shadow: 0 0 8px var(--red-400); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.btn-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-1); font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.btn-icon:hover { background: var(--bg-card-hover); color: var(--text-0); transform: rotate(180deg); }

/* ============================================================
   Step sections
   ============================================================ */
.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 20px;
  transition: all 0.3s;
}
.step.result { background: var(--bg-2); }
.step.step-result { border-color: var(--green-500); background: linear-gradient(180deg, rgba(34, 197, 94, 0.05) 0%, var(--bg-2) 100%); }
.step.step-error { border-color: var(--red-400); background: linear-gradient(180deg, rgba(248, 113, 113, 0.05) 0%, var(--bg-2) 100%); }

.step-head {
  display: flex; align-items: flex-start; gap: 16px;
  margin-bottom: 24px;
}
.step-num {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--gradient-1);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; color: var(--bg-0); font-size: 16px;
  flex-shrink: 0; box-shadow: 0 0 24px rgba(245, 158, 11, 0.3);
}
.step-num-done {
  background: var(--green-500);
  box-shadow: 0 0 24px rgba(34, 197, 94, 0.4);
}
.step-num-error {
  background: var(--red-400);
  box-shadow: 0 0 24px rgba(248, 113, 113, 0.4);
}
.step h2 { font-size: 22px; font-weight: 700; color: var(--text-0); letter-spacing: -0.01em; }
.step-sub { color: var(--text-2); font-size: 14px; margin-top: 2px; }

/* ============================================================
   Dropzone
   ============================================================ */
.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 60px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-1);
}
.dropzone:hover, .dropzone.drag-over {
  border-color: var(--amber-500);
  background: rgba(245, 158, 11, 0.05);
}
.dropzone.drag-over { transform: scale(1.01); }
.dropzone-icon {
  font-size: 56px;
  margin-bottom: 16px;
  filter: grayscale(0.3);
}
.dropzone-text { display: flex; flex-direction: column; gap: 4px; }
.dropzone-text strong {
  font-size: 17px; color: var(--text-0); font-weight: 700;
}
.dropzone-text span { font-size: 13px; color: var(--text-2); }
.dropzone-text em { color: var(--amber-400); font-style: normal; font-weight: 600; }

/* ============================================================
   File list
   ============================================================ */
.file-list { margin-top: 20px; }
.file-list-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0 12px; font-size: 13px;
  color: var(--text-2); font-weight: 500;
  border-top: 1px solid var(--border);
  margin-top: 20px;
  padding-top: 16px;
}
.file-list-total { font-family: var(--font-mono); color: var(--amber-400); }
.file-list ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.file-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all 0.2s;
}
.file-item:hover { border-color: var(--border-strong); }
.file-item-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--bg-3); color: var(--text-1);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; font-family: var(--font-mono);
  flex-shrink: 0;
}
.file-item-name {
  flex: 1; font-size: 14px; color: var(--text-0);
  font-family: var(--font-mono);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.file-item-size {
  font-size: 12px; color: var(--text-3);
  font-family: var(--font-mono);
  flex-shrink: 0;
}
.file-item-remove {
  width: 28px; height: 28px; border-radius: 50%;
  background: transparent; border: none;
  color: var(--text-3); font-size: 16px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.15s;
}
.file-item-remove:hover { color: var(--red-400); background: rgba(248, 113, 113, 0.1); }

/* ============================================================
   Options
   ============================================================ */
.options {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
@media (max-width: 600px) { .options { grid-template-columns: 1fr; } }
.option { cursor: pointer; }
.option input { display: none; }
.option-body {
  padding: 18px 20px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all 0.2s;
}
.option:hover .option-body { border-color: var(--border-strong); }
.option input:checked + .option-body {
  border-color: var(--amber-500);
  background: rgba(245, 158, 11, 0.05);
  box-shadow: 0 0 0 1px var(--amber-500);
}
.option-title {
  font-size: 15px; font-weight: 700;
  color: var(--text-0); margin-bottom: 4px;
}
.option-desc { font-size: 12px; color: var(--text-2); }

.transition-setting { margin-top: 20px; }
.transition-setting label {
  display: block; font-size: 13px; color: var(--text-2);
  margin-bottom: 8px; font-weight: 500;
}
.transition-setting label span {
  color: var(--amber-400); font-weight: 700;
  font-family: var(--font-mono);
}
.transition-setting input[type=range] {
  width: 100%; -webkit-appearance: none; appearance: none;
  height: 4px; border-radius: 2px;
  background: var(--bg-3);
  outline: none;
}
.transition-setting input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--amber-500);
  cursor: pointer;
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.5);
  border: 2px solid var(--bg-1);
}
.transition-setting input[type=range]::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--amber-500);
  cursor: pointer; border: 2px solid var(--bg-1);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px; padding: 14px 24px;
  border-radius: var(--radius-full);
  font-size: 15px; font-weight: 700;
  cursor: pointer; transition: all 0.2s;
  font-family: inherit;
  border: none;
  width: 100%;
}
.btn-primary {
  background: var(--text-0); color: var(--bg-0);
}
.btn-primary:hover:not(:disabled) {
  background: var(--amber-300);
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(245, 158, 11, 0.4);
}
.btn-primary:disabled {
  opacity: 0.5; cursor: not-allowed;
}
.btn-ghost {
  background: transparent; color: var(--text-1);
  border: 1px solid var(--border-strong);
  margin-top: 12px;
}
.btn-ghost:hover { background: var(--bg-card-hover); color: var(--text-0); }

.btn-huge { padding: 18px 32px; font-size: 18px; }
.btn-icon-anim { font-size: 18px; }
.btn-primary:hover .btn-icon-anim { animation: bounce 0.5s ease infinite; }
@keyframes bounce {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(3px); }
}

.btn-icon-sm {
  width: 24px; height: 24px; border-radius: 4px;
  background: transparent; border: 1px solid var(--border);
  color: var(--text-2); font-size: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  transition: all 0.15s;
}
.btn-icon-sm:hover { color: var(--text-0); background: var(--bg-card-hover); }

/* ============================================================
   Result
   ============================================================ */
.result-info {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px; margin-bottom: 24px;
}
.result-stat {
  text-align: center;
  padding: 20px 12px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.result-stat-num {
  font-size: 28px; font-weight: 800; color: var(--text-0);
  font-family: var(--font-sans);
  letter-spacing: -0.02em; line-height: 1; margin-bottom: 6px;
}
.result-stat-label {
  font-size: 11px; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.08em; font-weight: 500;
}

/* ============================================================
   Logs
   ============================================================ */
.logs {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 20px;
}
.logs-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px;
  font-size: 12px; color: var(--text-2); font-weight: 600;
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.logs-body {
  padding: 12px 16px;
  max-height: 280px; overflow-y: auto;
  font-family: var(--font-mono); font-size: 12px;
  line-height: 1.6;
}
.logs-body::-webkit-scrollbar { width: 6px; }
.logs-body::-webkit-scrollbar-track { background: var(--bg-1); }
.logs-body::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }
.log-line { padding: 2px 0; }
.log-line .ts { color: var(--text-3); margin-right: 8px; }
.log-line.info { color: var(--cyan-400); }
.log-line.ok { color: var(--green-400); }
.log-line.warn { color: var(--amber-400); }
.log-line.error { color: var(--red-400); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  margin-top: 60px; padding: 20px 0;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 12px; color: var(--text-3);
}
.footer code {
  font-family: var(--font-mono); color: var(--text-2);
  background: var(--bg-2); padding: 1px 6px; border-radius: 4px;
}
.footer a { color: var(--text-2); text-decoration: none; }
.footer a:hover { color: var(--amber-400); }
.footer-meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ============================================================
   Hidden state
   ============================================================ */
[hidden] { display: none !important; }