/*
  style.css
  - Giao diện hiện đại, responsive
  - Thanh tiến trình tải mô hình
  - Căn giữa video và hiển thị kết quả nổi bật
*/

:root {
  --bg: #0f172a;            /* nền xanh đậm */
  --card: #111827;          /* nền thẻ */
  --text: #e5e7eb;          /* chữ sáng */
  --muted: #9ca3af;         /* chữ phụ */
  --primary: #4f46e5;       /* tím chủ đạo */
  --primary-600: #4338ca;
  --success: #10b981;       /* xanh lá */
  --danger: #ef4444;        /* đỏ */
  --border: #1f2937;        /* viền */
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 20% -20%, #1e293b 0%, var(--bg) 40%, #0b1225 100%);
  color: var(--text);
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 16px;
}

.app-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(79,70,229,0.12), rgba(16,185,129,0.12));
}
.app-header h1 {
  margin: 0;
  font-weight: 700;
  font-size: 1.8rem;
}
.app-header p {
  margin: 6px 0 12px;
  color: var(--muted);
}

main.container {
  display: grid;
  gap: 16px;
}

.controls {
  display: grid;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.control-group {
  display: grid;
  gap: 8px;
}
.control-group.inline { display: flex; gap: 8px; align-items: center; }

label { font-weight: 600; }
.input-row { display: flex; gap: 8px; }
input[type="url"] {
  flex: 1;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
}

.btn {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0a0f1a;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}
.btn[disabled] { opacity: 0.6; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary-600); }
.btn-success { background: var(--success); border-color: #0ea371; }
.btn-outline { background: transparent; }

.status-area { color: var(--muted); min-height: 20px; }

.loader {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.loader.hidden { display: none; }
.loader-title { font-weight: 600; margin-bottom: 10px; }
.progress-bar {
  width: 100%; height: 8px; border-radius: 999px;
  background: #0b1220; border: 1px solid var(--border);
  overflow: hidden;
}
.progress {
  width: 40%; height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, #a78bfa, #60a5fa, #34d399);
  animation: slide 1.2s ease-in-out infinite;
}
@keyframes slide {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(30%); }
  100% { transform: translateX(120%); }
}

.video-panel {
  display: grid;
  place-items: center;
}
.video-container {
  position: relative;
  width: 480px; /* Tăng từ 340px lên 480px */
  height: 360px; /* Tăng từ 260px lên 360px */
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #0b1220;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  overflow: hidden;
}
canvas { transform: scaleX(-1); }

.results {
  display: grid;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.result-line {
  display: flex; gap: 10px; align-items: baseline;
}
.label { font-size: 1.4rem; font-weight: 700; }
.confidence { font-size: 1rem; color: var(--muted); }
.emoji { font-size: 3rem; }
.emoji.hidden { display: none; }

.error-area {
  color: var(--text);
  background: rgba(239,68,68,0.15);
  border: 1px solid rgba(239,68,68,0.25);
  border-radius: 10px;
  padding: 12px;
  display: none;
}
.error-area.show { display: block; }

/* Responsive */
@media (min-width: 768px) {
  .video-container {
    width: 640px;
    height: 480px;
  }
}

@media (max-width: 767px) {
  .video-container {
    width: 100%;
    height: auto;
    aspect-ratio: 4/3;
  }
}
canvas { transform: scaleX(-1); }

.results {
  display: grid;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.result-line {
  display: flex; gap: 10px; align-items: baseline;
}
.label { font-size: 1.4rem; font-weight: 700; }
.confidence { font-size: 1rem; color: var(--muted); }
.emoji { font-size: 3rem; }
.emoji.hidden { display: none; }

.error-area {
  color: var(--text);
  background: rgba(239,68,68,0.15);
  border: 1px solid rgba(239,68,68,0.25);
  border-radius: 10px;
  padding: 12px;
  display: none;
}
.error-area.show { display: block; }

/* Responsive */
@media (max-width: 600px) {
  .video-container { width: 100%; height: auto; aspect-ratio: 4/3; }
}

/* ---------- Footer ---------- */
.app-footer {
  margin-top: 8px;
  border-top: 1px solid var(--border);
  background: var(--card);
}
.app-footer .container { padding: 12px 16px; }
.copyright { margin: 0; color: var(--muted); text-align: center; font-size: 0.95rem; }

/* Footer in light theme */
body[data-theme="light"] .app-footer { background: #ffffff; }

/* ---------- Header layout enhancements ---------- */
.app-header .container { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.header-info { display: grid; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.header-toggle { font-size: 0.95rem; }

/* ---------- Light theme overrides ---------- */
body[data-theme="light"] {
  --bg: #f8fafc;         /* nền sáng */
  --card: #ffffff;       /* nền thẻ sáng */
  --text: #111827;       /* chữ tối */
  --muted: #4b5563;      /* chữ phụ */
  --border: #e5e7eb;     /* viền sáng */
}
body[data-theme="light"] .app-header {
  background: linear-gradient(90deg, rgba(79,70,229,0.08), rgba(16,185,129,0.08));
}
body[data-theme="light"] input[type="url"] {
  background: #ffffff;
  color: var(--text);
  border-color: var(--border);
}
body[data-theme="light"] .video-container { background: #ffffff; box-shadow: 0 8px 18px rgba(0,0,0,0.08); }
body[data-theme="light"] .progress-bar { background: #ffffff; }

/* Nền sáng thực sự cho body khi theme light */
body[data-theme="light"] {
  background: radial-gradient(1200px 600px at 20% -20%, #e2e8f0 0%, var(--bg) 40%, #eef2ff 100%);
}

/* Nút sáng hơn trong theme light */
body[data-theme="light"] .btn {
  background: #f9fafb;
  color: var(--text);
  border-color: var(--border);
}