frontend/style.css

/* ================================================================
   ImageForensics-Detect — Frontend CSS
   Dark theme, glassmorphism, premium micro-animations
   ================================================================ */

/* ── Tokens ──────────────────────────────────────────────────── */
:root {
  --bg: #06080f;
  --bg2: #0c1018;
  --surface: rgba(255, 255, 255, 0.04);
  --surface2: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border2: rgba(255, 255, 255, 0.14);
  --accent: #6d9dff;
  --accent2: #a78bfa;
  --real: #34d399;
  --fake: #f87171;
  --warn: #fbbf24;
  --text: #e8ecf4;
  --text2: #8892a4;
  --text3: #4e5668;
  --radius: 14px;
  --radius-lg: 22px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --glow-accent: 0 0 40px rgba(109, 157, 255, 0.18);
  --glow-fake: 0 0 30px rgba(248, 113, 113, 0.20);
  --glow-real: 0 0 30px rgba(52, 211, 153, 0.20);
}

/* ── Reset ───────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  font-size: clamp(14px, 1.2vw, 16px);
  /* Fluid typography */
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(109, 157, 255, 0.10) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 90% 90%, rgba(167, 139, 250, 0.06) 0%, transparent 60%);
  overflow-x: hidden;
}

/* ── Header ─────────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 8, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.logo-svg {
  width: 38px;
  height: 38px;
  color: var(--accent);
  filter: drop-shadow(0 0 8px rgba(109, 157, 255, 0.5));
  flex-shrink: 0;
}

.logo-main {
  display: flex;
  align-items: center;
}

.logo-title {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.logo-accent {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-sub {
  font-size: 0.65rem;
  color: var(--text3);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-top: 0.1rem;
}

.header-badges {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  letter-spacing: 0.3px;
}

.badge-research {
  background: rgba(109, 157, 255, 0.12);
  color: var(--accent);
  border: 1px solid rgba(109, 157, 255, 0.25);
}

.badge-live {
  background: rgba(52, 211, 153, 0.10);
  color: var(--real);
  border: 1px solid rgba(52, 211, 153, 0.25);
  font-variant-numeric: tabular-nums;
}

.badge-live.offline {
  color: var(--fake);
  background: rgba(248, 113, 113, 0.10);
  border-color: rgba(248, 113, 113, 0.25);
}

/* ── Stats Bar ───────────────────────────────────────────────── */
.stats-bar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0.8rem 1rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.stats-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0;
  min-width: 700px;
  /* Force scroll on mobile */
}

.stat-item {
  text-align: center;
  padding: 0.4rem 2rem;
  transition: transform 0.2s;
}

.stat-item:hover {
  transform: translateY(-1px);
}

.stat-value {
  font-size: 1.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.65rem;
  color: var(--text3);
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-top: 0.1rem;
}

.stat-divider {
  width: 1px;
  height: 30px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── Main ────────────────────────────────────────────────────── */
.main {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.section-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text3);
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}

/* ── Upload Zone ─────────────────────────────────────────────── */
.upload-section {
  margin-bottom: 2rem;
}

.upload-zone {
  border: 2px dashed var(--border2);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 3.5rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.25s, background 0.25s, transform 0.2s;
  position: relative;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(109, 157, 255, 0.05);
  transform: translateY(-2px);
  box-shadow: var(--glow-accent);
}

.upload-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  color: var(--accent);
  filter: drop-shadow(0 0 15px rgba(109, 157, 255, 0.4));
}

.upload-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.upload-sub {
  font-size: 0.85rem;
  color: var(--text2);
  margin-bottom: 0.4rem;
}

.upload-hint {
  font-size: 0.78rem;
  color: var(--text3);
  margin-bottom: 1.8rem;
}

/* ── Upload Format Chips ────────────────────────────────────── */
.upload-formats {
  display: flex;
  gap: 0.4rem;
  justify-content: center;
  margin-top: 0.8rem;
  flex-wrap: wrap;
}

.fmt-chip {
  font-size: 0.62rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text3);
  border: 1px solid var(--border);
}

/* Preview actions row */
.preview-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
}

.preview-ready {
  font-size: 0.78rem;
  color: var(--real);
  margin-top: 0.4rem;
  font-weight: 600;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn-upload {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.75rem 2.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
  font-family: var(--font);
}

.btn-upload:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(109, 157, 255, 0.35);
}

.btn-analyze {
  background: linear-gradient(135deg, #3b5bdb, var(--accent2));
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.85rem 2.4rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
  box-shadow: 0 6px 25px rgba(59, 91, 219, 0.4);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-analyze:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 35px rgba(59, 91, 219, 0.5);
}

.btn-analyze:active {
  transform: translateY(0);
}

.btn-icon {
  font-size: 1.1rem;
}

.btn-clear {
  background: transparent;
  color: var(--text2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 1.6rem;
  font-size: 0.85rem;
  cursor: pointer;
  margin-left: 0.8rem;
  transition: all 0.2s;
  font-family: var(--font);
}

.btn-clear:hover {
  border-color: var(--fake);
  color: var(--fake);
}

/* ── Preview ─────────────────────────────────────────────────── */
.preview-area {
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.2rem;
  animation: fadeIn 0.3s ease;
}

.preview-img {
  width: 90px;
  height: 90px;
  object-fit: cover;
  border-radius: 10px;
  border: 2px solid var(--border2);
}

.preview-info {
  flex: 1;
}

.preview-filename {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}

.preview-filesize {
  font-size: 0.78rem;
  color: var(--text3);
  margin-top: 0.2rem;
}

/* ── Analyzing State ─────────────────────────────────────────── */
.analyzing-state {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  animation: fadeIn 0.3s ease;
}

.analyzing-title {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.spinner-container {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
}

.spinner-ring {
  width: 100%;
  height: 100%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

.spinner-core {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  padding: 1.2rem;
  animation: pulse 1.5s infinite;
}

.analyzing-steps {
  display: inline-flex;
  flex-direction: column;
  gap: 0.55rem;
  text-align: left;
}

.step-item {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text3);
  transition: color 0.3s;
}

.step-item.done {
  color: var(--real);
}

.step-item.active {
  color: var(--accent);
  animation: pulse 1s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* ── Verdict Card ────────────────────────────────────────────── */
.results-section {
  animation: fadeIn 0.4s ease;
}

.verdict-card {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.4s;
}

.verdict-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.06;
  pointer-events: none;
}

.verdict-card.real {
  border-color: rgba(52, 211, 153, 0.3);
  box-shadow: var(--glow-real);
  background: rgba(52, 211, 153, 0.03);
}

.verdict-card.fake {
  border-color: rgba(248, 113, 113, 0.3);
  box-shadow: var(--glow-fake);
  background: rgba(248, 113, 113, 0.03);
}

.verdict-icon {
  font-size: 3.5rem;
  line-height: 1;
}

.verdict-content {
  flex: 1;
  min-width: 160px;
}

.verdict-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text3);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.verdict-text {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.verdict-text.real {
  color: var(--real);
}

.verdict-text.fake {
  color: var(--fake);
}

.verdict-sub {
  font-size: 0.85rem;
  color: var(--text2);
  margin-top: 0.4rem;
}

/* ── Confidence Ring ─────────────────────────────────────────── */
.confidence-ring-wrap {
  position: relative;
  width: 120px;
  height: 120px;
  flex-shrink: 0;
}

.confidence-ring {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-bg {
  fill: none;
  stroke: var(--border);
  stroke-width: 8;
}

.ring-fill {
  fill: none;
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 314;
  stroke-dashoffset: 314;
  transition: stroke-dashoffset 1.2s cubic-bezier(0.34, 1.56, 0.64, 1), stroke 0.5s;
}

.ring-fill.real {
  stroke: var(--real);
}

.ring-fill.fake {
  stroke: var(--fake);
}

.confidence-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.conf-value {
  font-size: 1.5rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.conf-label {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text3);
  text-transform: uppercase;
  white-space: nowrap;
}

/* ── Probability Bar ─────────────────────────────────────────── */
.prob-bar-section {
  margin-top: 1.2rem;
}

.prob-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.prob-label-real {
  color: var(--real);
}

.prob-label-fake {
  color: var(--fake);
}

.prob-bar-track {
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
}

.prob-bar-real {
  height: 100%;
  background: var(--real);
  border-radius: 999px 0 0 999px;
  transition: width 1s ease;
}

.prob-bar-fake {
  height: 100%;
  background: var(--fake);
  border-radius: 0 999px 999px 0;
  transition: width 1s ease;
}

.prob-bar-values {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  color: var(--text3);
  margin-top: 0.3rem;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

/* ── Branch Tags ─────────────────────────────────────────────── */
.branch-tag {
  font-size: 0.58rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  margin-left: 0.35rem;
  vertical-align: middle;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--text3);
}

.branch-tag.trained {
  background: rgba(52, 211, 153, 0.12);
  color: var(--real);
}

.branch-weight {
  font-size: 0.65rem;
  color: var(--text3);
  margin-top: 0.15rem;
  font-family: var(--mono);
}

.legend-note {
  font-size: 0.68rem;
  color: var(--text3);
}

/* ── Branch Cards ────────────────────────────────────────────── */
.branches-grid {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.branches-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.branches-legend {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text2);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.25rem;
}

.legend-dot.real {
  background: var(--real);
}

.legend-dot.fake {
  background: var(--fake);
}

.branch-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 0.5rem 0.9rem 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
}

.branch-card:last-child {
  border-bottom: none;
}

.branch-card:hover {
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
}

.branch-icon {
  width: 38px;
  height: 38px;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text3);
}

.branch-icon.spectral {
  color: #60a5fa;
}

.branch-icon.edge {
  color: #818cf8;
}

.branch-icon.cnn {
  color: #34d399;
}

.branch-icon.vit {
  color: #a78bfa;
}

.branch-icon.diffusion {
  color: #f472b6;
}

.branch-info {
  flex: 1;
  min-width: 0;
}

.branch-name {
  font-weight: 600;
  font-size: 0.88rem;
}

.branch-desc {
  font-size: 0.72rem;
  color: var(--text3);
  margin-bottom: 0.5rem;
}

.branch-bar-wrap {
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
}

.branch-bar {
  height: 100%;
  border-radius: 999px;
  width: 0%;
  transition: width 0.9s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.4s;
}

.branch-score-col {
  text-align: right;
  flex-shrink: 0;
  min-width: 80px;
}

.branch-prob {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 700;
}

.branch-conf {
  font-size: 0.7rem;
  color: var(--text3);
  margin-top: 0.15rem;
}

/* ── Viz Section ─────────────────────────────────────────────── */
.viz-section {
  margin: 2rem 0;
}

.viz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 1rem;
}

.viz-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
}

.viz-card:hover {
  transform: translateY(-3px);
  border-color: var(--border2);
}

.viz-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.viz-sub {
  font-size: 0.65rem;
  color: var(--text3);
  margin-bottom: 0.75rem;
}

.viz-img-wrap {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.3);
}

.viz-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
}

.viz-img.loaded {
  display: block;
}

.viz-unavailable {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.65rem;
  color: var(--text3);
  padding: 0.5rem;
  line-height: 1.5;
}

.viz-unavailable code {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--warn);
}

/* ── Banners ─────────────────────────────────────────────────── */
.warning-banner {
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.25);
  border-radius: var(--radius);
  padding: 0.9rem 1.2rem;
  font-size: 0.82rem;
  color: var(--warn);
  margin-top: 1.5rem;
}

.error-banner {
  background: rgba(248, 113, 113, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.25);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  font-size: 0.85rem;
  color: var(--fake);
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: fadeIn 0.3s ease;
}

.error-icon {
  font-size: 1.2rem;
}

/* ── How It Works Section ──────────────────────────────────── */
.how-section {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
}

.how-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.how-step {
  text-align: center;
  flex: 1;
  min-width: 140px;
  max-width: 200px;
  padding: 1.2rem 0.8rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.2s, border-color 0.2s;
}

.how-step:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.how-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 0.5rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.how-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.how-desc {
  font-size: 0.7rem;
  color: var(--text3);
  line-height: 1.5;
}

.how-arrow {
  font-size: 1.4rem;
  color: var(--text3);
  flex-shrink: 0;
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem 0;
}

.footer-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
}

.footer-brand-icon {
  font-size: 1.5rem;
  filter: drop-shadow(0 0 8px rgba(109, 157, 255, 0.5));
}

.footer-brand-name {
  font-size: 1.05rem;
  font-weight: 800;
}

.footer-brand-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-tagline {
  font-size: 0.78rem;
  color: var(--text3);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.footer-badge-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.footer-chip {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(109, 157, 255, 0.10);
  color: var(--accent);
  border: 1px solid rgba(109, 157, 255, 0.2);
}

.footer-col-title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text2);
  margin-bottom: 0.9rem;
}

.footer-col.divider {
  border-left: 1px solid var(--border);
  padding-left: 2.5rem;
}

.footer-icon {
  width: 14px;
  height: 14px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.6rem;
  color: var(--text3);
  opacity: 0.8;
  transition: transform 0.2s, color 0.2s;
}

.footer-list li:hover .footer-icon {
  color: var(--accent);
  transform: translateX(2px);
  opacity: 1;
}

.footer-list.highlight .footer-icon {
  color: var(--accent);
  opacity: 1;
}

.footer-list.mini li {
  font-size: 0.7rem;
  color: var(--text3);
  margin-bottom: 0.3rem;
}

.footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-list li {
  font-size: 0.76rem;
  color: var(--text3);
  line-height: 1.4;
  display: flex;
  align-items: center;
}

.footer-accuracy {
  background: rgba(52, 211, 153, 0.15);
  color: var(--real);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  margin-left: 0.3rem;
}

.footer-bar {
  max-width: 1100px;
  margin: 1.5rem auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 0;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
}

.footer-bar>div {
  font-size: 0.72rem;
  color: var(--text3);
}

.footer-bar-center {
  text-align: center;
  flex: 1;
}

/* ── Animations ─────────────────────────────────────────────── */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .how-arrow {
    display: none;
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding: 0.75rem 1rem;
    flex-direction: column;
    gap: 1rem;
  }

  .logo-text-group {
    text-align: center;
  }

  .main {
    padding: 2rem 1rem 4rem;
  }

  .verdict-card {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .verdict-text {
    font-size: clamp(1.4rem, 5vw, 1.8rem);
  }

  .viz-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-bar {
    flex-direction: column;
    text-align: center;
    gap: 0.4rem;
  }

  .footer-col.divider {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
  }
}