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

/* ── Design tokens ───────────────────────────────────────────────────────── */
:root {
  /* Background layers */
  --bg-base:        #070b14;
  --bg-surface:     rgba(255, 255, 255, 0.04);
  --bg-surface-hover: rgba(255, 255, 255, 0.07);
  --bg-glass:       rgba(14, 22, 42, 0.6);

  /* Accent gradient */
  --accent-from:  #7c3aed;   /* purple */
  --accent-via:   #4f46e5;   /* indigo */
  --accent-to:    #06b6d4;   /* cyan */
  --accent-glow:  rgba(124, 58, 237, 0.35);
  --accent-glow-cyan: rgba(6, 182, 212, 0.25);

  /* Text */
  --text-primary:  #f0f4ff;
  --text-secondary: #94a3b8;
  --text-muted:    #475569;

  /* Borders */
  --border:        rgba(255, 255, 255, 0.08);
  --border-accent: rgba(124, 58, 237, 0.5);
  --border-hover:  rgba(124, 58, 237, 0.8);

  /* Status */
  --color-success: #34d399;
  --color-error:   #f87171;

  /* Misc */
  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --radius-full: 999px;

  --blur-glass:  blur(16px);
  --transition:  0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  --shadow-card:
    0 0 0 1px var(--border),
    0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow:
    0 0 0 1px var(--border-accent),
    0 0 30px var(--accent-glow),
    0 4px 24px rgba(0, 0, 0, 0.5);
}

/* ── Base ────────────────────────────────────────────────────────────────── */
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-y: scroll;
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  padding: 3rem 1.25rem 4rem;
  overflow-x: hidden;

  /* Radial gradient mesh background */
  background-image:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(124, 58, 237, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 110%, rgba(6, 182, 212, 0.1) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 50% 50%, rgba(79, 70, 229, 0.06) 0%, transparent 70%);
}

/* Subtle grid overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ── Ambient orbs — pure CSS, GPU compositor, zero JS cost ───────────────── */
/* Uses only transform + opacity = runs entirely on the compositor thread     */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  will-change: transform;
  animation: orbFloat linear infinite;
}

.orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(124,58,237,0.18) 0%, transparent 70%);
  top: -150px; left: -180px;
  animation-duration: 22s;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(6,182,212,0.14) 0%, transparent 70%);
  bottom: -120px; right: -140px;
  animation-duration: 28s;
  animation-delay: -10s;
}

.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(79,70,229,0.1) 0%, transparent 70%);
  top: 40%; left: 50%;
  animation-duration: 18s;
  animation-delay: -6s;
}

@keyframes orbFloat {
  0%   { transform: translate(0, 0) scale(1); }
  25%  { transform: translate(30px, -20px) scale(1.04); }
  50%  { transform: translate(-10px, 35px) scale(0.97); }
  75%  { transform: translate(-30px, -15px) scale(1.02); }
  100% { transform: translate(0, 0) scale(1); }
}

/* ── Fade-up entrance — CSS only, runs once on load ─────────────────────── */
/* Uses CSS custom property --delay for staggering without extra classes      */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.anim-fade-up {
  animation: fadeUp 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: var(--delay, 0s);
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  .orb { animation: none !important; }
  .anim-fade-up { animation: none !important; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── Layout ──────────────────────────────────────────────────────────────── */
.container {
  position: relative;
  z-index: 1;
  max-width: 940px;
  margin: 0 auto;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.hero-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

/* Badge above title */
.hero-header .badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: var(--radius-full);
  padding: 0.3rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: #a78bfa;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  /* Badge subtle shimmer sweep */
  background-size: 200% 100%;
  animation: badgeShimmer 4s ease infinite;
}

@keyframes badgeShimmer {
  0%,100% { background-color: rgba(124,58,237,0.12); }
  50%      { background-color: rgba(124,58,237,0.22); }
}

.hero-header h1 {
  font-size: clamp(2rem, 6vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 0.4rem;

  /* Animated gradient text */
  background: linear-gradient(135deg, #ffffff 0%, #c4b5fd 40%, #67e8f9 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
  0%,100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

.h1-sub {
  display: block;
  font-size: clamp(1.1rem, 3.5vw, 1.6rem);
  font-weight: 600;
  opacity: 0.75;
  letter-spacing: -0.02em;
  margin-top: 0.2rem;
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 520px;
  margin: 0.75rem auto 0;
  line-height: 1.65;
}

.hero-desc strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ── Trust signals row ───────────────────────────────────────────────────── */
.trust-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.4rem 0.6rem;
  margin-top: 1.1rem;
}

.trust-item {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-success);
  letter-spacing: 0.01em;
}

.trust-sep {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* ── Dropzone ────────────────────────────────────────────────────────────── */
.dropzone {
  position: relative;
  background: var(--bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1.5px dashed rgba(124, 58, 237, 0.4);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2rem;
  text-align: center;
  cursor: pointer;
  transition:
    border-color var(--transition),
    background var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
  will-change: transform, box-shadow;
  overflow: hidden;
}

/* Animated glow ring on hover */
.dropzone::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
  opacity: 0;
  transition: opacity var(--transition);
  z-index: -1;
}

.dropzone:hover,
.dropzone:focus-visible {
  border-color: var(--border-hover);
  background: var(--bg-surface-hover);
  box-shadow: var(--shadow-glow);
  outline: none;
}

.dropzone.dragover {
  border-color: var(--accent-to);
  background: rgba(124, 58, 237, 0.08);
  box-shadow: var(--shadow-glow), 0 0 60px var(--accent-glow);
  transform: scale(1.01);
}

/* Upload icon */
.dropzone-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
  filter: drop-shadow(0 0 16px var(--accent-glow));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

.dropzone-text {
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.dropzone-hint {
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.browse {
  background: linear-gradient(90deg, var(--accent-from), var(--accent-to));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  cursor: pointer;
}

/* ── Image Grid ──────────────────────────────────────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 1.75rem;
  contain: layout style;
}

/* ── Card ────────────────────────────────────────────────────────────────── */
.card {
  position: relative;
  background: var(--bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: grab;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
  will-change: transform;
  contain: layout style;
}

.card:hover {
  border-color: var(--border-accent);
  box-shadow:
    0 0 0 1px var(--border-accent),
    0 0 20px var(--accent-glow),
    0 8px 32px rgba(0, 0, 0, 0.5);
  transform: translateY(-3px) scale(1.02);
}

.card.sortable-ghost {
  opacity: 0.3;
  border-color: var(--border-accent);
}

.card.sortable-chosen {
  box-shadow: 0 0 0 2px var(--accent-from), 0 0 30px var(--accent-glow);
  cursor: grabbing;
}

/* Thumbnail */
.card .thumb {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
  background: rgba(255, 255, 255, 0.03);
  content-visibility: auto;
}

/* Filename */
.card .meta {
  padding: 0.45rem 0.6rem;
  font-size: 0.7rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid var(--border);
}

/* Order badge */
.card .index-badge {
  position: absolute;
  top: 7px;
  left: 7px;
  background: linear-gradient(135deg, var(--accent-from), var(--accent-via));
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 10px var(--accent-glow);
  will-change: transform;
}

/* Remove button */
.card .remove {
  position: absolute;
  top: 7px;
  right: 7px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.1);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
  will-change: transform;
}

.card .remove:hover {
  background: rgba(248, 113, 113, 0.85);
  border-color: rgba(248, 113, 113, 0.5);
  transform: scale(1.15) rotate(90deg);
}

/* ── Actions bar ─────────────────────────────────────────────────────────── */
.actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.75rem;
  flex-wrap: wrap;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: none;
  border-radius: var(--radius-full);
  padding: 0.7rem 1.6rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    opacity var(--transition),
    transform var(--transition),
    box-shadow var(--transition),
    background var(--transition);
  will-change: transform;
  position: relative;
  overflow: hidden;
}

/* Shimmer sweep on hover */
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.btn:not(:disabled):hover::after {
  transform: translateX(100%);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none !important;
}

/* Primary — gradient pill */
.btn-primary {
  background: linear-gradient(135deg, var(--accent-from), var(--accent-via), var(--accent-to));
  background-size: 200% 200%;
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow), 0 4px 16px rgba(0,0,0,0.4);
  animation: gradient-shift 4s ease infinite;
}

@keyframes gradient-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.btn-primary:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--accent-glow), 0 8px 24px rgba(0,0,0,0.5);
}

.btn-primary:not(:disabled):active {
  transform: translateY(0);
  box-shadow: 0 0 14px var(--accent-glow);
}

/* Secondary — ghost pill */
.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.btn-secondary:not(:disabled):hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn-icon {
  font-size: 0.9rem;
}

/* ── Status ──────────────────────────────────────────────────────────────── */
.status {
  margin-top: 1.25rem;
  text-align: center;
  min-height: 1.4rem;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  transition: color var(--transition);
}

.status.error {
  color: var(--color-error);
  text-shadow: 0 0 12px rgba(248, 113, 113, 0.4);
}

.status.success {
  color: var(--color-success);
  text-shadow: 0 0 12px rgba(52, 211, 153, 0.4);
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

/* ── Stats row ───────────────────────────────────────────────────────────── */
.footer-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  will-change: transform;
}

.stat-card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-3px);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #ffffff 0%, #c4b5fd 50%, #67e8f9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── Feature cards ───────────────────────────────────────────────────────── */
.footer-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.feature-card {
  background: var(--bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  will-change: transform;
  cursor: default;
}

.feature-card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
  filter: drop-shadow(0 0 8px var(--accent-glow));
  transition: transform var(--transition);
}

.feature-card:hover .feature-icon {
  transform: scale(1.2) rotate(-5deg);
}

.feature-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Formats section ─────────────────────────────────────────────────────── */
.footer-formats {
  text-align: center;
  margin-bottom: 2.5rem;
}

.formats-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.9rem;
}

.format-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.format-pill {
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  cursor: default;
  transition: background var(--transition), border-color var(--transition),
              color var(--transition), box-shadow var(--transition), transform var(--transition);
  will-change: transform;
}

.format-pill:hover {
  transform: translateY(-2px) scale(1.08);
  color: #fff;
  /* color and shadow set via JS from data-color */
}

/* ── How it works ────────────────────────────────────────────────────────── */
.footer-steps {
  text-align: center;
  margin-bottom: 2.5rem;
}

.steps-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.step {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.25rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  will-change: transform;
  min-width: 180px;
}

.step:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 16px var(--accent-glow);
  transform: translateY(-2px);
}

.step-num {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 12px var(--accent-glow);
}

.step-text {
  text-align: left;
}

.step-text strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-primary);
  font-weight: 700;
}

.step-text span {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.step-connector {
  flex: 1;
  min-width: 30px;
  max-width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-from), var(--accent-to));
  opacity: 0.4;
  margin: 0 0.25rem;
  position: relative;
  /* Animated flow effect */
  background-size: 200% 100%;
  animation: flow 2s linear infinite;
}

@keyframes flow {
  0%   { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* ── Footer bottom bar ───────────────────────────────────────────────────── */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.25rem 0 0.5rem;
  border-top: 1px solid var(--border);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.back-to-top {
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.3);
  color: #a78bfa;
  border-radius: var(--radius-full);
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  will-change: transform;
}

.back-to-top:hover {
  background: rgba(124, 58, 237, 0.25);
  box-shadow: 0 0 14px var(--accent-glow);
  transform: translateY(-2px);
}

.footer-github {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 0.4rem 0.9rem;
  transition: color var(--transition), border-color var(--transition),
              background var(--transition), transform var(--transition);
  will-change: transform;
}

.footer-github:hover {
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.06);
  transform: translateY(-2px);
}

/* ── Scroll-reveal animation ─────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Footer responsive ───────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .footer-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-features {
    grid-template-columns: 1fr;
  }

  .step-connector { display: none; }

  .steps-row {
    flex-direction: column;
    gap: 0.75rem;
  }

  .step { width: 100%; justify-content: flex-start; }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .footer-stats { grid-template-columns: repeat(2, 1fr); }
}


/* ── Scrollbar (webkit) ──────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(124, 58, 237, 0.4);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(124, 58, 237, 0.7); }

/* ── Selection ───────────────────────────────────────────────────────────── */
::selection {
  background: rgba(124, 58, 237, 0.4);
  color: #fff;
}

/* ── Dropzone icon pulse ─────────────────────────────────────────────────── */
/* Pure CSS, runs on opacity — zero layout cost */
@keyframes iconPulse {
  0%, 100% { transform: translateY(0) scale(1);    opacity: 1; }
  50%       { transform: translateY(-6px) scale(1.06); opacity: 0.85; }
}
.dropzone-icon {
  animation: iconPulse 3.5s ease-in-out infinite;
  display: inline-block;
  will-change: transform;
}

/* ── FAQ section ─────────────────────────────────────────────────────────── */
.faq-section {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

.faq-heading {
  text-align: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.faq-item {
  background: var(--bg-glass);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item[open] {
  border-color: var(--border-accent);
  box-shadow: 0 0 18px var(--accent-glow);
}

.faq-q {
  padding: 1rem 1.25rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  user-select: none;
  transition: color var(--transition);
}

.faq-q::-webkit-details-marker { display: none; }

/* Animated chevron via ::after */
.faq-q::after {
  content: "›";
  font-size: 1.2rem;
  color: #a78bfa;
  transform: rotate(90deg);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
  line-height: 1;
}

.faq-item[open] .faq-q::after {
  transform: rotate(270deg);
}

.faq-item[open] .faq-q {
  color: #a78bfa;
}

.faq-a {
  padding: 0 1.25rem 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
  margin-top: 0;
}

.faq-a strong { color: var(--text-primary); font-weight: 600; }
.faq-a em     { color: #a78bfa; font-style: normal; }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 540px) {
  body { padding: 2rem 1rem 3rem; }

  .grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.75rem;
  }

  .dropzone { padding: 2.5rem 1.25rem; }

  .actions { justify-content: center; }

  .hero-header h1 { letter-spacing: -0.03em; }
}