/* ==========================================================================
   CIFAKE — Design tokens & theme
   A "forensic scan" aesthetic: near-black surfaces, teal scan-line accent
   for REAL, coral alert accent for FAKE, monospace readouts for data.
   ========================================================================== */

:root[data-theme="dark"] {
  --bg: #0B0F14;
  --surface: #121821;
  --surface-2: #182130;
  --border: #232E3D;
  --text: #E7ECF2;
  --text-muted: #8B98A8;
  --accent: #14E0C4;       /* teal — scan / REAL */
  --accent-2: #FF5470;     /* coral — alert / FAKE */
  --accent-soft: rgba(20, 224, 196, 0.12);
  --accent2-soft: rgba(255, 84, 112, 0.14);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

:root[data-theme="light"] {
  --bg: #F4F7FA;
  --surface: #FFFFFF;
  --surface-2: #EEF2F6;
  --border: #DCE3EA;
  --text: #10151C;
  --text-muted: #5C6B7A;
  --accent: #0EA894;
  --accent-2: #E23B5D;
  --accent-soft: rgba(14, 168, 148, 0.10);
  --accent2-soft: rgba(226, 59, 93, 0.10);
  --shadow: 0 20px 50px rgba(16, 21, 28, 0.08);
}

* { box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  transition: background 0.3s ease, color 0.3s ease;
  scroll-behavior: smooth;
}

h1, h2, h3, h4, .display-font {
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: -0.01em;
}

.mono, .readout {
  font-family: 'JetBrains Mono', monospace;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent); opacity: 0.85; }

/* ---------------------------- Navbar ---------------------------- */
.cifake-navbar {
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}
:root[data-theme="light"] .cifake-navbar {
  background: rgba(255, 255, 255, 0.85);
}
.cifake-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text) !important;
  letter-spacing: 0.02em;
}
.cifake-brand-mark {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1.1rem;
  animation: pulse-ring 2.6s ease-in-out infinite;
}
.nav-link {
  color: var(--text-muted) !important;
  font-weight: 500;
  padding: 0.5rem 0.9rem !important;
  border-radius: 8px;
  transition: all 0.2s ease;
}
.nav-link:hover { color: var(--text) !important; background: var(--surface-2); }

.theme-toggle-btn {
  width: 40px; height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s ease;
}
.theme-toggle-btn:hover { background: var(--accent-soft); transform: translateY(-1px); }

/* ---------------------------- Hero ---------------------------- */
.hero {
  position: relative;
  padding: 6.5rem 0 5rem;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, black 40%, transparent 100%);
}
.hero-content { position: relative; z-index: 2; }
.eyebrow-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
.eyebrow-badge .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  animation: blink 1.6s ease-in-out infinite;
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.08;
  margin: 1.2rem 0 1.1rem;
}
.hero h1 .accent-text { color: var(--accent); }
.hero p.lead-text {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 620px;
  line-height: 1.6;
}
.btn-scan {
  background: var(--accent);
  color: #06110F;
  border: none;
  font-weight: 600;
  padding: 0.85rem 1.8rem;
  border-radius: 12px;
  display: inline-flex; align-items: center; gap: 0.5rem;
  transition: all 0.2s ease;
  box-shadow: 0 8px 30px var(--accent-soft);
}
.btn-scan:hover { transform: translateY(-2px); box-shadow: 0 12px 34px var(--accent-soft); color: #06110F; }
.btn-outline-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
  padding: 0.85rem 1.6rem;
  border-radius: 12px;
  font-weight: 500;
  transition: all 0.2s ease;
}
.btn-outline-ghost:hover { background: var(--surface-2); color: var(--text); }

/* Hero scan panel */
.scan-panel {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 18px;
  padding: 1.4rem;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.scan-panel .scan-frame {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--surface-2);
  display: flex; align-items: center; justify-content: center;
}
.scan-panel .scan-frame img { width: 100%; height: 100%; object-fit: cover; }
.scan-line {
  position: absolute; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 14px var(--accent);
  animation: scan-move 2.8s ease-in-out infinite;
}
.scan-readout {
  display: flex; justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.9rem;
}
.scan-readout .value { color: var(--accent); }

@keyframes scan-move { 0% { top: 4%; } 50% { top: 94%; } 100% { top: 4%; } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }
@keyframes pulse-ring { 0%, 100% { box-shadow: 0 0 0 0 var(--accent-soft); } 50% { box-shadow: 0 0 0 8px transparent; } }

/* ---------------------------- Stat strip ---------------------------- */
.stat-strip { border-bottom: 1px solid var(--border); background: var(--surface); }
.stat-item { text-align: center; padding: 2.2rem 1rem; }
.stat-item .num { font-family: 'JetBrains Mono', monospace; font-size: 2rem; font-weight: 600; color: var(--accent); }
.stat-item .label { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.3rem; }

/* ---------------------------- Feature cards ---------------------------- */
.section-pad { padding: 5rem 0; }
.section-title { font-weight: 700; margin-bottom: 0.6rem; }
.section-sub { color: var(--text-muted); max-width: 560px; }

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.8rem;
  height: 100%;
  transition: all 0.25s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.feature-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}
.feature-card h5 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; }
.feature-card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0; }

/* Reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------------------------- Cards / Panels (generic) ---------------------------- */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.page-header { padding: 3rem 0 2rem; border-bottom: 1px solid var(--border); }

/* ---------------------------- Upload / Dropzone ---------------------------- */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 18px;
  background: var(--surface);
  padding: 3.2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
}
.dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.dropzone .dz-icon {
  font-size: 2.6rem;
  color: var(--accent);
  margin-bottom: 0.8rem;
}
.dropzone h5 { font-family: 'Space Grotesk', sans-serif; }
.dropzone p { color: var(--text-muted); font-size: 0.88rem; }
.preview-wrap { display: none; }
.preview-wrap.active { display: block; }
.preview-frame {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  max-height: 340px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-2);
}
.preview-frame img { max-width: 100%; max-height: 340px; object-fit: contain; }

.spinner-overlay {
  display: none;
  align-items: center; justify-content: center;
  flex-direction: column;
  gap: 0.8rem;
  padding: 2rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}
.spinner-overlay.active { display: flex; }

/* ---------------------------- Result page ---------------------------- */
.verdict-badge {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.7rem 1.5rem;
  border-radius: 999px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.03em;
}
.verdict-real { background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent); }
.verdict-fake { background: var(--accent2-soft); color: var(--accent-2); border: 1px solid var(--accent-2); }

.result-image-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--surface);
}
.result-image-card img { width: 100%; height: 280px; object-fit: contain; background: var(--surface-2); }
.result-image-card .caption {
  padding: 0.7rem 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

.prob-row { margin-bottom: 1.1rem; }
.prob-row .prob-label {
  display: flex; justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
}
.prob-track {
  height: 10px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}
.prob-fill { height: 100%; border-radius: 999px; transition: width 1s cubic-bezier(0.16, 1, 0.3, 1); }
.prob-fill.real { background: linear-gradient(90deg, var(--accent), #6CF3DF); }
.prob-fill.fake { background: linear-gradient(90deg, var(--accent-2), #FF8AA0); }

/* ---------------------------- History table ---------------------------- */
.history-table thead th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 0.75rem;
}
.history-table tbody td {
  padding: 0.9rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.history-thumb { width: 52px; height: 52px; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); }
.badge-real { background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent); }
.badge-fake { background: var(--accent2-soft); color: var(--accent-2); border: 1px solid var(--accent-2); }
.empty-state { text-align: center; padding: 4rem 1rem; color: var(--text-muted); }
.empty-state i { font-size: 2.6rem; color: var(--accent); margin-bottom: 1rem; }

/* ---------------------------- Alerts ---------------------------- */
.cifake-alert {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
}

/* ---------------------------- Footer ---------------------------- */
.cifake-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  background: var(--surface);
}

/* ---------------------------- Buttons ---------------------------- */
.btn-download {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 600;
  border-radius: 12px;
  padding: 0.7rem 1.4rem;
  transition: all 0.2s ease;
}
.btn-download:hover { background: var(--accent-soft); color: var(--accent); }

@media (max-width: 991px) {
  .hero { padding: 4rem 0 3rem; }
}