/* ═══════════════════════════════════════════════════
   ZAP — STYLE.CSS  (consolidated, no duplicates)
═══════════════════════════════════════════════════ */

/* ── Reset & base ────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}

/* ── Single :root — all tokens in one place ──────── */
:root {
  /* Brand colours */
  --accent: #34a853;

  /* Dark-mode surface scale */
  --bg: #09090b;
  --bg-card: #0b111c;
  --border: #27272a;

  /* Features/footer scale (dark) */
  --s1: #111111;
  --s2: #181818;
  --s3: #222222;
  --s4: #2e2e2e;
  --s5: #484848;
  --s6: #6a6a6a;
  --s7: #9a9a9a;
  --s8: #cccccc;
  --col-white: #f3f3f3;
  --col-black: #090909;

  /* Panel (room card) scale */
  --panel-90: #141414;
  --panel-80: #1e1e1e;
  --panel-70: #2a2a2a;
  --panel-50: #525252;
  --panel-40: #737373;
  --panel-20: #c4c4c4;
  --panel-white: #f5f5f5;
  --panel-radius: 12px;

  /* Typography */
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-mono: "DM Mono", monospace;
  --font-serif: "Instrument Serif", Georgia, serif;
  --font-jakarta: "Plus Jakarta Sans", system-ui, sans-serif;

  /* Semantic text */
  --text: #ffffff;
}

/* ── Light mode overrides ────────────────────────── */
body.light {
  --bg: #f5f6fa;
  --bg-card: #ffffff;
  --border: #ddd;
  --text: #09090b;

  --s1: #ffffff;
  --s2: #f4f4f5;
  --s3: #e4e4e7;
  --s4: #d4d4d8;
  --s5: #a1a1aa;
  --s6: #71717a;
  --s7: #52525b;
  --s8: #3f3f46;
  --col-white: #000000;
  --col-black: #ffffff;

  --panel-90: #ffffff;
  --panel-80: #fafafa;
  --panel-70: #e4e4e7;
  --panel-50: #a1a1aa;
  --panel-40: #71717a;
  --panel-20: #3f3f46;
  --panel-white: #000000;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  transition:
    background 0.3s,
    color 0.3s;
}

/* ── GDG LOGO ANIMATION ──────────────────────────── */
.gdg-anim-wrap {
  width: 85px;
  height: 55px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.gdg-stage {
  position: absolute;
  width: 340px;
  height: 220px;
  top: 50%;
  left: 50%;
  margin: -110px 0 0 -170px;
  transform: scale(0.25);
  transform-origin: center center;
}
.gdg-dot {
  position: absolute;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  will-change: transform, opacity;
}
#dot-blue {
  background: #4285f4;
  left: 85px;
}
#dot-red {
  background: #ea4335;
  left: 127px;
}
#dot-yellow {
  background: #fbbc04;
  left: 169px;
}
#dot-green {
  background: #34a853;
  left: 211px;
}
.gdg-logo-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
}
.gdg-stage .cap {
  stroke-linecap: round;
  fill: none;
  stroke-width: 26;
}
.gdg-stage .cap-outline {
  stroke: var(--bg);
  stroke-width: 34;
  fill: none;
  stroke-linecap: round;
}
#cap-blue {
  stroke: #4285f4;
}
#cap-red {
  stroke: #ea4335;
}
#cap-yellow {
  stroke: #fbbc04;
}
#cap-green {
  stroke: #34a853;
}

/* ── NAVBAR ──────────────────────────────────────── */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 36px;
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(5, 10, 18, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.25);
  transition: background 0.3s;
}
body.light .nav {
  background: rgba(245, 246, 250, 0.75);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}
.logo {
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: bold;
  font-size: 20px;
}
.logo-text a {
  text-decoration: none;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 25px;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #ffffff 30%, #a0a0a0);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-left: -14px;
  display: inline-block;
}
body.light .logo-text a {
  background: linear-gradient(135deg, #09090b 30%, #555555);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav a {
  padding: 6px 12px;
  margin-right: 4px;
  text-decoration: none;
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
  opacity: 0.75;
  border-radius: 8px;
  transition:
    opacity 0.2s,
    background 0.2s;
}
.nav a:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.08);
}
body.light .nav a:hover {
  background: rgba(0, 0, 0, 0.06);
}

/* ── THEME SWITCH ────────────────────────────────── */
.switch {
  font-size: 10px;
  position: relative;
  display: inline-block;
  width: 4em;
  height: 2.2em;
  border-radius: 30px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  vertical-align: middle;
  top: -2px;
  overflow: hidden;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: #2a2a2a;
  transition: 0.4s;
  border-radius: 30px;
  overflow: hidden;
  contain: layout paint;
}
.slider:before {
  position: absolute;
  content: "";
  height: 1.2em;
  width: 1.2em;
  border-radius: 20px;
  left: 0.5em;
  bottom: 0.5em;
  transition: 0.4s cubic-bezier(0.81, -0.04, 0.38, 1.5);
  box-shadow: inset 8px -4px 0 0 #fff;
}
.switch input:checked + .slider {
  background: #00a6ff;
}
.switch input:checked + .slider:before {
  transform: translateX(1.8em);
  box-shadow: inset 15px -4px 0 15px #ffcf48;
}
.star {
  background: #fff;
  border-radius: 50%;
  position: absolute;
  width: 5px;
  height: 5px;
  transition: all 0.4s;
}
.star_1 {
  left: 2.5em;
  top: 0.5em;
}
.star_2 {
  left: 2.2em;
  top: 1.2em;
}
.star_3 {
  left: 3em;
  top: 0.9em;
}
.switch input:checked ~ .slider .star {
  opacity: 0;
}
.cloud {
  width: 3.5em;
  position: absolute;
  bottom: -1.4em;
  left: -1.1em;
  opacity: 0;
  transition: all 0.4s;
}
.switch input:checked ~ .slider .cloud {
  opacity: 1;
}

/* ── HERO ────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 120px 20px;
}
.hero h1 {
  font-size: clamp(40px, 7vw, 64px);
  font-family: var(--font-sans);
  font-weight: 700;
}
.gradient {
  background: linear-gradient(90deg, #4285f4, #ea4335, #fbbc05, #34a853);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}
.hero p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 16px;
  margin: 16px 0 36px;
  max-width: 480px;
  margin-inline: auto;
}
body.light .hero p {
  color: rgba(0, 0, 0, 0.55);
}
.hero button {
  position: relative;
  display: inline-block;
  background: linear-gradient(to bottom, #1b1c3f, #4a4e91);
  color: white;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  border: none;
  border-radius: 30px;
  padding: 14px 28px;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease-in-out;
}
.hero button:hover {
  background: linear-gradient(to bottom, #2c2f63, #5b67b7);
  transform: translateY(-2px);
}
.hero button:active {
  transform: scale(0.95);
}

/* ── TRANSFER SECTION ────────────────────────────── */
.transfer {
  text-align: center;
  padding: 80px 20px;
}
.transfer-header h2 {
  font-size: 40px;
  font-family: var(--font-jakarta);
  font-weight: 800;
  margin: 0 0 8px;
  background: linear-gradient(135deg, #fff 30%, rgba(255, 255, 255, 0.55));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
body.light .transfer-header h2 {
  background: linear-gradient(135deg, #111 30%, #555);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.transfer-sub {
  color: rgba(255, 255, 255, 0.45);
  font-size: 15px;
  margin: 0 0 32px;
}
body.light .transfer-sub {
  color: rgba(0, 0, 0, 0.45);
}
.hidden {
  display: none !important;
}

/* ── NAME BAR ────────────────────────────────────── */
.name-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
}
.name-display {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 5px 10px 5px 6px;
  transition: border-color 0.2s;
}
body.light .name-display {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.1);
}
.name-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4285f4, #34a853);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  font-family: var(--font-jakarta);
}
.name-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  font-family: var(--font-jakarta);
}
.name-edit-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.35);
  padding: 2px;
  display: flex;
  align-items: center;
  border-radius: 4px;
  transition: color 0.15s;
}
.name-edit-btn:hover {
  color: rgba(255, 255, 255, 0.75);
}
body.light .name-edit-btn {
  color: rgba(0, 0, 0, 0.3);
}
body.light .name-edit-btn:hover {
  color: rgba(0, 0, 0, 0.65);
}
.name-edit {
  display: flex;
  align-items: center;
  gap: 6px;
  animation: nameEditIn 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes nameEditIn {
  from {
    opacity: 0;
    transform: translateY(-4px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.name-input {
  padding: 7px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 13px;
  font-family: var(--font-jakarta);
  outline: none;
  width: 180px;
  transition: border-color 0.2s;
}
.name-input:focus {
  border-color: #4285f4;
}
body.light .name-input {
  background: rgba(0, 0, 0, 0.04);
}
.name-save-btn {
  padding: 7px 14px;
  border-radius: 8px;
  background: var(--text);
  color: var(--bg);
  border: none;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-jakarta);
  cursor: pointer;
  transition: opacity 0.15s;
}
.name-save-btn:hover {
  opacity: 0.85;
}
.name-cancel-btn {
  padding: 7px 12px;
  border-radius: 8px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  font-family: var(--font-jakarta);
  cursor: pointer;
  transition: background 0.15s;
}
.name-cancel-btn:hover {
  background: rgba(255, 255, 255, 0.07);
}
body.light .name-cancel-btn:hover {
  background: rgba(0, 0, 0, 0.06);
}
.name-error {
  font-size: 12px;
  color: #ef4444;
  min-height: 16px;
}

/* ── MODE TABS ───────────────────────────────────── */
.mode-tabs {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 14px;
  padding: 4px;
  position: relative;
  margin-bottom: 36px;
}
body.light .mode-tabs {
  background: #f4f4f5;
  border-color: #e4e4e7;
}
.tabs-slider {
  position: absolute;
  top: 4px;
  bottom: 4px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  transition:
    left 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  z-index: 0;
  will-change: left, width;
}
body.light .tabs-slider {
  background: #fff;
  border-color: #e4e4e7;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.1);
}
.mode-tab {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 22px;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.35);
  font-size: 13.5px;
  font-weight: 500;
  font-family: var(--font-jakarta);
  cursor: pointer;
  position: relative;
  z-index: 1;
  border-radius: 10px;
  transition: color 0.25s;
  white-space: nowrap;
  user-select: none;
}
body.light .mode-tab {
  color: #71717a;
}
.mode-tab svg {
  flex-shrink: 0;
  opacity: 0.4;
  transition:
    opacity 0.25s,
    transform 0.25s;
}
.mode-tab.active {
  color: #fff;
  font-weight: 600;
}
body.light .mode-tab.active {
  color: #09090b;
}
.mode-tab.active svg {
  opacity: 1;
  transform: scale(1.1);
}
.mode-tab:not(.active):hover {
  color: rgba(255, 255, 255, 0.65);
}
body.light .mode-tab:not(.active):hover {
  color: #3f3f46;
}
.mode-tab:not(.active):hover svg {
  opacity: 0.7;
}

/* ── TRANSFER PANEL ──────────────────────────────── */
.transfer-panel {
  width: min(560px, 94vw);
  margin: 0 auto;
}
#uploadContainer,
#downloadContainer {
  position: relative;
  width: 100%;
}

/* ── DROP ZONE ───────────────────────────────────── */
.drop-zone {
  position: relative;
  width: 100%;
  min-height: 280px;
  border: 1.5px dashed var(--border);
  border-radius: 14px;
  background: #0f0f11;
  overflow: hidden;
  cursor: pointer;
  transition:
    border-color 0.2s,
    background 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.drop-zone::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.07) 1px,
    transparent 1px
  );
  background-size: 28px 28px;
  pointer-events: none;
  transition: opacity 0.25s;
}
.drop-zone::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, #0f0f11 100%);
  pointer-events: none;
}
.drop-zone.drag-over {
  border-color: #52525b;
  background: #111113;
}
.drop-zone.drag-over::before {
  background-image: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.14) 1px,
    transparent 1px
  );
}
body.light .drop-zone {
  background: #f8f9fa;
  border-color: #d4d4d8;
}
body.light .drop-zone::after {
  background: radial-gradient(ellipse at center, transparent 40%, #f8f9fa 100%);
}
body.light .drop-zone.drag-over {
  background: #f0f0f2;
  border-color: #a1a1aa;
}
.dz-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  padding: 2.5rem 2rem;
  pointer-events: none;
}
.upload-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border: 1.5px solid #27272a;
  border-radius: 12px;
  background: #09090b;
  color: #a1a1aa;
  transition:
    border-color 0.2s,
    transform 0.2s;
}
body.light .upload-arrow {
  background: #fff;
  border-color: #d4d4d8;
  color: #71717a;
}
.drop-zone:hover .upload-arrow,
.drop-zone.drag-over .upload-arrow {
  border-color: #52525b;
  transform: translateY(-3px);
}
.dz-text {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.dz-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}
.dz-sub {
  font-size: 0.77rem;
  color: #71717a;
}
.dz-sub span {
  color: #a1a1aa;
  font-weight: 500;
}
.dz-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  transform: scale(0);
  animation: dzRipple 0.6s linear;
  pointer-events: none;
  z-index: 0;
}
@keyframes dzRipple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ── FILE PILLS ──────────────────────────────────── */
.files-list {
  width: 100%;
  max-height: 200px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0 4px 4px;
}
.files-list::-webkit-scrollbar {
  width: 4px;
}
.files-list::-webkit-scrollbar-thumb {
  background: #27272a;
  border-radius: 4px;
}
.file-pill {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.85rem;
  background: #18181b;
  border: 1px solid #27272a;
  border-radius: 9px;
  animation: pillIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  transition: border-color 0.15s;
}
.file-pill:hover {
  border-color: #52525b;
}
body.light .file-pill {
  background: #f4f4f5;
  border-color: #e4e4e7;
}
body.light .file-pill:hover {
  border-color: #a1a1aa;
}
@keyframes pillIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.file-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 7px;
  background: #1c1c1f;
  border: 1px solid #27272a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  font-weight: 600;
  color: #71717a;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}
body.light .file-icon {
  background: #e4e4e7;
  border-color: #d4d4d8;
}
.file-info {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.file-name {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.68rem;
  color: #71717a;
}
.file-prog-wrap {
  width: 60px;
  height: 3px;
  border-radius: 2px;
  background: #27272a;
  overflow: hidden;
}
.file-prog-bar {
  height: 100%;
  border-radius: 2px;
  background: #fafafa;
  width: 0%;
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
body.light .file-prog-bar {
  background: #111;
}
.file-remove {
  flex-shrink: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: #71717a;
  padding: 2px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    color 0.15s,
    background 0.15s;
}
.file-remove:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.08);
}

/* ── FOOTER ROW / BADGES ─────────────────────────── */
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  color: #71717a;
  margin-top: 10px;
}
.info-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.68rem;
  color: #71717a;
}

/* ── UPLOAD BUTTON ───────────────────────────────── */
.upload-btn {
  width: auto;
  min-width: 180px;
  margin: 12px auto 0;
  padding: 0.7rem 1.6rem;
  border-radius: 9px;
  background: #fafafa;
  color: #09090b;
  font-family: var(--font-jakarta);
  font-size: 0.85rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition:
    opacity 0.15s,
    transform 0.15s;
  display: none;
}
.upload-btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}
.upload-btn:active {
  transform: none;
  opacity: 0.75;
}
.upload-btn.visible {
  display: block;
}
.upload-btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}
body.light .upload-btn {
  background: #111;
  color: #fafafa;
}

/* ── CLOUD ROOM BAR ──────────────────────────────── */
.cloud-room-bar {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 12px;
  margin-bottom: 14px;
}
body.light .cloud-room-bar {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
}
.cloud-room-bar-top {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 12px;
}
.cloud-room-info {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}
.cloud-room-label {
  font-size: 11px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.35);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-family: var(--font-jakarta);
}
body.light .cloud-room-label {
  color: rgba(0, 0, 0, 0.35);
}
.cloud-room-code {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-family: var(--font-jakarta);
}
.copy-code-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.4);
  transition:
    background 0.15s,
    color 0.15s;
}
.copy-code-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
body.light .copy-code-btn {
  color: rgba(0, 0, 0, 0.4);
}
body.light .copy-code-btn:hover {
  background: rgba(0, 0, 0, 0.08);
  color: #000;
}
.cloud-room-expiry {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.35);
  font-family: var(--font-jakarta);
  white-space: nowrap;
}
body.light .cloud-room-expiry {
  color: rgba(0, 0, 0, 0.35);
}
.back-btn {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-jakarta);
  transition: background 0.2s;
}
.back-btn:hover {
  background: rgba(255, 255, 255, 0.07);
}
body.light .back-btn:hover {
  background: rgba(0, 0, 0, 0.06);
}

/* ── SHARE LINK ROW ──────────────────────────────── */
.share-link-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}
.share-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text);
  padding: 10px 14px;
  font-size: 13px;
  font-family: var(--font-jakarta);
  outline: none;
}
body.light .share-input {
  background: rgba(0, 0, 0, 0.04);
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 9px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s;
  white-space: nowrap;
  font-family: var(--font-jakarta);
}
.copy-btn:hover {
  background: rgba(255, 255, 255, 0.14);
}
body.light .copy-btn {
  background: rgba(0, 0, 0, 0.06);
}
body.light .copy-btn:hover {
  background: rgba(0, 0, 0, 0.12);
}

/* ── DOWNLOAD VIEW ───────────────────────────────── */
.dl-room-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 14px;
  margin-bottom: 12px;
}
body.light .dl-room-header {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
}
.dl-room-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(52, 168, 83, 0.12);
  border: 1px solid rgba(52, 168, 83, 0.2);
  color: #34a853;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.dl-room-name {
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-jakarta);
  color: var(--text);
}
.dl-room-meta {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 2px;
}
body.light .dl-room-meta {
  color: rgba(0, 0, 0, 0.45);
}
.dl-files-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.dl-file-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  animation: pillIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.dl-file-left {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
}
.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: rgba(52, 168, 83, 0.12);
  border: 1px solid rgba(52, 168, 83, 0.25);
  color: #34a853;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-jakarta);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  cursor: pointer;
  transition: background 0.15s;
}
.dl-btn:hover {
  background: rgba(52, 168, 83, 0.22);
}
.dl-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 9px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-jakarta);
  cursor: pointer;
  transition: background 0.15s;
}
.dl-back-btn:hover {
  background: rgba(255, 255, 255, 0.07);
}
body.light .dl-back-btn:hover {
  background: rgba(0, 0, 0, 0.06);
}
.dl-empty {
  text-align: center;
  color: rgba(255, 255, 255, 0.35);
  font-size: 13px;
  padding: 24px 0;
  margin: 0;
}
body.light .dl-empty {
  color: rgba(0, 0, 0, 0.35);
}

/* ── P2P CARDS ───────────────────────────────────── */
.p2p-share-card,
.p2p-receive-card {
  background: #09090b;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 24px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
body.light .p2p-share-card,
body.light .p2p-receive-card {
  background: #fff;
  border-color: rgba(0, 0, 0, 0.05);
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}
.p2p-share-header,
.p2p-receive-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  width: 100%;
}
.p2p-share-title,
.p2p-receive-title {
  font-size: 18px;
  font-weight: 700;
  font-family: var(--font-jakarta);
  background: linear-gradient(90deg, #fff, #a0a0a0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
body.light .p2p-share-title,
body.light .p2p-receive-title {
  background: linear-gradient(90deg, #09090b, #555);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.p2p-share-sub,
.p2p-receive-sub {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 500;
  margin-top: 2px;
}
body.light .p2p-share-sub,
body.light .p2p-receive-sub {
  color: rgba(0, 0, 0, 0.5);
}
.p2p-receiver-count {
  font-size: 0.78rem;
  color: var(--s6);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  margin-top: 4px;
}
.p2p-qr {
  width: 190px;
  height: 190px;
  border-radius: 16px;
  background: #fff;
  padding: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s;
}
.p2p-qr:hover {
  transform: scale(1.02);
}
.p2p-cancel-btn {
  min-width: 140px;
  padding: 10px 22px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #ef4444;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-jakarta);
  cursor: pointer;
  transition: all 0.2s;
}
.p2p-cancel-btn:hover {
  background: rgba(239, 68, 68, 0.18);
}
.p2p-receive-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(66, 133, 244, 0.12);
  border: 1px solid rgba(66, 133, 244, 0.2);
  color: #4285f4;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.p2p-receive-actions {
  display: flex;
  gap: 10px;
  width: 100%;
  justify-content: center;
}

/* ── P2P ACCEPT / DECLINE ────────────────────────── */
.p2p-accept-btn {
  flex: 1;
  max-width: 200px;
  padding: 10px 18px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  color: #34a853;
  background: rgba(52, 168, 83, 0.08);
  border: 1px solid rgba(52, 168, 83, 0.25);
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: var(--font-jakarta);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.p2p-accept-btn:hover {
  border-color: rgba(52, 168, 83, 0.6);
  background: rgba(52, 168, 83, 0.18);
  transform: translateY(-2px);
}
.p2p-accept-btn:active {
  transform: none;
}
.p2p-decline-btn {
  flex: 1;
  max-width: 200px;
  padding: 10px 18px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #ea4335;
  background: rgba(234, 67, 53, 0.08);
  border: 1px solid rgba(234, 67, 53, 0.25);
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: var(--font-jakarta);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.p2p-decline-btn:hover {
  border-color: rgba(234, 67, 53, 0.6);
  background: rgba(234, 67, 53, 0.18);
  transform: translateY(-2px);
}
.p2p-decline-btn:active {
  transform: none;
}

/* ── P2P TRANSFER CARD ───────────────────────────── */
.p2p-transfer-card {
  background: #09090b;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
body.light .p2p-transfer-card {
  background: #fff;
  border-color: rgba(0, 0, 0, 0.06);
}
.p2p-transfer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.p2p-transfer-status {
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-jakarta);
  color: var(--text);
}
.p2p-transfer-progress {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
}
body.light .p2p-transfer-progress {
  background: rgba(0, 0, 0, 0.08);
}
.p2p-transfer-bar {
  height: 100%;
  background: linear-gradient(90deg, #4285f4, #ea4335, #fbbc05, #34a853);
  border-radius: 999px;
  width: 0%;
  transition: width 0.3s ease;
}
.p2p-transfer-info {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--font-mono);
}
body.light .p2p-transfer-info {
  color: rgba(0, 0, 0, 0.5);
}

/* ── CONNECTION QUALITY BADGE ────────────────────── */
.p2p-conn-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--s4);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--s6);
  letter-spacing: 0.05em;
}
.p2p-conn-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.conn-direct {
  background: #22c55e;
  box-shadow: 0 0 5px rgba(34, 197, 94, 0.5);
}
.conn-relay {
  background: #f59e0b;
  box-shadow: 0 0 5px rgba(245, 158, 11, 0.4);
}
.conn-unknown {
  background: var(--s5);
}

/* ── P2P STATE SCREENS ───────────────────────────── */
.p2p-state-center {
  text-align: center;
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.p2p-state-text {
  color: var(--s8);
  font-weight: 500;
  font-family: var(--font-jakarta);
}
.p2p-state-title {
  color: var(--s8);
  font-weight: 600;
  font-size: 1.1rem;
  font-family: var(--font-jakarta);
}
.p2p-state-sub {
  color: var(--s6);
  font-size: 0.95rem;
  font-family: var(--font-jakarta);
}
.p2p-error-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

/* ── PULSE ANIMATION ─────────────────────────────── */
.pulse-dot-wrap {
  position: relative;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(255, 193, 7, 0.1);
  border-radius: 50%;
}
.pulse-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ffc107;
  z-index: 1;
  position: relative;
}
.pulse-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid #ffc107;
  animation: pulseRing 1.6s ease-out infinite;
  opacity: 0;
}
@keyframes pulseRing {
  0% {
    transform: scale(0.4);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.7);
    opacity: 0;
  }
}

/* ── ROOM PANEL ──────────────────────────────────── */
.panel {
  width: 100%;
  max-width: 440px;
  background: var(--panel-90);
  border: 1px solid var(--panel-70);
  border-radius: 16px;
  overflow: hidden;
  margin: 0 auto;
}
.tab-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border-bottom: 1px solid var(--panel-70);
  position: relative;
}
.tab-slider {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 33.333%;
  height: 2px;
  background: var(--panel-white);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.tab-btn {
  padding: 0.9rem 0.5rem;
  background: none;
  border: none;
  color: var(--panel-40);
  font-family: var(--font-jakarta);
  font-size: 0.73rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.tab-btn.active {
  color: var(--panel-white);
}
.tab-btn:hover:not(.active) {
  color: var(--panel-20);
}
.tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  height: 16px;
  padding: 0 3px;
  border-radius: 8px;
  background: var(--panel-70);
  color: var(--panel-20);
  font-size: 0.58rem;
  font-family: var(--font-mono);
  transition: background 0.2s;
}
.tab-btn.active .tab-badge {
  background: var(--panel-50);
  color: var(--panel-white);
}
.views {
  overflow: hidden;
}
.view {
  padding: 1.75rem;
  display: none;
  flex-direction: column;
  gap: 1.25rem;
  animation: fadeUp 0.22s ease both;
}
.view.active {
  display: flex;
}
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.view-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--panel-50);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.field-label {
  font-size: 0.72rem;
  color: var(--panel-40);
  letter-spacing: 0.04em;
}
.expiry-block {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.expiry-display {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}
.expiry-num {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 300;
  color: var(--panel-white);
  line-height: 1;
  min-width: 2ch;
}
.expiry-unit {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--panel-50);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.slider-wrap {
  position: relative;
  height: 20px;
  display: flex;
  align-items: center;
}
.s-track-bg,
.s-track-fill {
  position: absolute;
  left: 0;
  height: 2px;
  border-radius: 2px;
  pointer-events: none;
}
.s-track-bg {
  right: 0;
  background: var(--panel-70);
}
.s-track-fill {
  background: var(--panel-white);
  transition: width 0.06s linear;
}
/* Scoped range input — only inside .slider-wrap */
.slider-wrap input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  position: relative;
  z-index: 1;
  width: 100%;
  height: 20px;
  background: transparent;
  margin: 0;
  padding: 0;
  outline: none;
  cursor: pointer;
}
.slider-wrap input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: transparent;
}
.slider-wrap input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--panel-white);
  border: none;
  margin-top: -7px;
  box-shadow: 0 0 0 3px var(--panel-90);
  transition: transform 0.15s;
}
.slider-wrap input[type="range"]:hover::-webkit-slider-thumb {
  transform: scale(1.15);
}
.slider-wrap input[type="range"]::-moz-range-track {
  height: 2px;
  background: transparent;
}
.slider-wrap input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--panel-white);
  border: none;
}
.expiry-ticks {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--panel-50);
  padding: 0 1px;
}
.divider {
  height: 1px;
  background: var(--panel-70);
  margin: 0 -1.75rem;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.field input {
  background: var(--panel-80);
  border: 1px solid var(--panel-70);
  border-radius: var(--panel-radius);
  color: var(--panel-white);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 0.7rem 0.9rem;
  width: 100%;
  outline: none;
  transition: border-color 0.18s;
  letter-spacing: 0.04em;
}
.field input::placeholder {
  color: var(--panel-50);
}
.field input:focus {
  border-color: var(--panel-40);
}
.code-input {
  font-size: 1.4rem !important;
  letter-spacing: 0.22em !important;
  text-align: center;
  padding: 0.9rem 1rem !important;
  text-transform: uppercase;
}
.code-hint {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--panel-50);
  text-align: center;
  letter-spacing: 0.06em;
}
.code-error {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: #ef4444;
  text-align: center;
  display: block;
}
.btn-primary {
  width: 100%;
  padding: 0.78rem;
  border-radius: var(--panel-radius);
  border: none;
  background: var(--panel-white);
  color: #09090b;
  font-family: var(--font-jakarta);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition:
    opacity 0.15s,
    transform 0.12s;
}
body.light .btn-primary {
  background: #000;
  color: #fff;
}
.btn-primary:hover {
  opacity: 0.88;
}
.btn-primary:active {
  transform: scale(0.98);
  opacity: 0.75;
}
.info-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--panel-50);
  letter-spacing: 0.04em;
}
.info-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--panel-50);
  flex-shrink: 0;
}
.rooms-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.room-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.9rem;
  background: var(--panel-80);
  border: 1px solid var(--panel-70);
  border-radius: var(--panel-radius);
  transition:
    border-color 0.15s,
    opacity 0.18s,
    transform 0.18s;
  animation: fadeUp 0.2s ease both;
}
.room-item:hover {
  border-color: var(--panel-50);
}
.room-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
  flex-shrink: 0;
  box-shadow: 0 0 6px rgba(34, 197, 94, 0.45);
}
.room-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.room-code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--panel-white);
  letter-spacing: 0.1em;
}
.room-meta {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--panel-50);
  letter-spacing: 0.04em;
}
.room-actions {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  flex-shrink: 0;
}
.btn-open {
  padding: 0.28rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--panel-70);
  background: none;
  color: var(--panel-20);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  cursor: pointer;
  transition:
    border-color 0.15s,
    color 0.15s,
    background 0.15s;
  white-space: nowrap;
}
.btn-open:hover {
  border-color: var(--panel-white);
  color: var(--panel-white);
  background: var(--panel-70);
}
.btn-delete {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid transparent;
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background 0.15s,
    border-color 0.15s;
  flex-shrink: 0;
  padding: 0;
}
.btn-delete:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.25);
}
.btn-delete svg {
  display: block;
  pointer-events: none;
}
.rooms-empty {
  text-align: center;
  padding: 2rem 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--panel-50);
  letter-spacing: 0.06em;
}

/* ── TOAST ───────────────────────────────────────── */
#toast {
  position: fixed;
  top: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: #000;
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  border: 1px solid #27272a;
  font-family: var(--font-jakarta);
  font-size: 0.82rem;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  display: none;
  transition:
    opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
body.light #toast {
  background: #fff;
  color: #000;
  border-color: #e4e4e7;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* ════════════════════════════════
   FEATURES SECTION
════════════════════════════════ */
.features {
  padding: 6rem 2rem 5rem;
  max-width: 1080px;
  margin: 0 auto;
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--s3);
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--s3);
}
.card {
  background: var(--s1);
  padding: 0;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  cursor: default;
  transition: background 0.3s;
}
.card:hover {
  background: var(--s2);
}
.card-spotlight {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
  background: radial-gradient(
    400px circle at var(--mx, 50%) var(--my, 50%),
    rgba(255, 255, 255, 0.03),
    transparent 60%
  );
}
body.light .card-spotlight {
  background: radial-gradient(
    400px circle at var(--mx, 50%) var(--my, 50%),
    rgba(0, 0, 0, 0.03),
    transparent 60%
  );
}
.card:hover .card-spotlight {
  opacity: 1;
}
.card-visual {
  height: 160px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--s3);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--s1);
}
.card-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--s3) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.8;
}
.card-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at center,
    transparent 30%,
    var(--s1) 85%
  );
  pointer-events: none;
}
.card:hover .card-visual::after {
  background: radial-gradient(
    ellipse at center,
    transparent 30%,
    var(--s2) 85%
  );
}
.card-visual-inner {
  position: absolute;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.vis-pill {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--s5);
  letter-spacing: 0.1em;
  border: 1px solid var(--s4);
  padding: 2px 8px;
  border-radius: 999px;
}
.vis-pill-green {
  color: #22c55e;
  border-color: rgba(34, 197, 94, 0.25);
}
.mini-node {
  position: absolute;
  z-index: 1;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--s4);
  background: var(--s2);
}
.card-body {
  padding: 1.6rem 1.6rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  flex: 1;
}
.card-num {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--s5);
  letter-spacing: 0.18em;
}
.card-title {
  font-family: var(--font-jakarta);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--col-white);
  line-height: 1.2;
}
.card-desc {
  font-size: 0.8rem;
  color: var(--s6);
  line-height: 1.75;
  font-weight: 300;
  flex: 1;
}

/* ════════════════════════════════
FOOTER: LAYOUT, GDG INFO AND DEV SECTION 
════════════════════════════════ */
.footer-wrap {
  border-top: 1px solid var(--s3);
  padding: 4rem 2rem 2.5rem;
  max-width: 1080px;
  margin: 0 auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--s3);
  align-items: start;
}
.gdg-col {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}
.gdg-logo-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.gdg-logo-img {
  width: 38px;
  height: 38px;
  border-radius: 4px;
  object-fit: contain;
  flex-shrink: 0;
}
.gdg-name-col {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.gdg-sup {
  font-family: var(--font-mono);
  font-size: 0.57rem;
  letter-spacing: 0.15em;
  color: var(--s5);
  text-transform: uppercase;
}
.gdg-main {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--col-white);
}
.gdg-desc {
  font-size: 0.78rem;
  color: var(--s6);
  line-height: 1.75;
  font-weight: 300;
  max-width: 320px;
}
.gdg-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.gdg-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--s6);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color 0.18s;
}
.gdg-link:hover {
  color: var(--col-white);
}
.gdg-link svg {
  opacity: 0.55;
  flex-shrink: 0;
  transition: opacity 0.18s;
}
.gdg-link:hover svg {
  opacity: 1;
}
.devs-col {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}
.devs-top-label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.devs-sup {
  font-family: var(--font-jakarta);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--s6);
}
.tw-line {
  font-family: var(--font-jakarta);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--s6);
  min-height: 1.5em;
}
.tw-cursor {
  display: inline-block;
  width: 2px;
  height: 0.9em;
  background: var(--s5);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}
.avatar-section {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.avatar-strip {
  display: flex;
  align-items: center;
}
.avatar-item {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 2px solid var(--col-black);
  background: var(--s3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  color: var(--s7);
  margin-left: -8px;
  flex-shrink: 0;
  position: relative;
  cursor: pointer;
  transition: transform 0.2s;
  overflow: hidden;
}
.avatar-item:first-child {
  margin-left: 0;
}
.avatar-item:hover {
  transform: translateY(-4px) scale(1.08);
  z-index: 10;
}
.avatar-item.selected {
  border-color: var(--s6);
  box-shadow: 0 0 0 1px var(--s5);
}
.dev-card-active {
  background: var(--s2);
  border: 1px solid var(--s3);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  transition:
    border-color 0.18s,
    background 0.18s;
  animation: slideIn 0.2s ease;
}
.dev-card-active:hover {
  border-color: var(--s5);
  background: var(--s3);
}
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.dev-card-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  flex-shrink: 0;
  overflow: hidden;
}
.dev-card-info {
  flex: 1;
  min-width: 0;
}
.dev-card-name {
  font-family: var(--font-jakarta);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--col-white);
}
.dev-card-role {
  font-family: var(--font-jakarta);
  font-size: 0.62rem;
  font-weight: 400;
  color: var(--s5);
  margin-top: 1px;
}
.dev-card-quote {
  font-size: 0.72rem;
  color: var(--s6);
  margin-top: 0.35rem;
  font-style: italic;
  line-height: 1.5;
}
.li-arrow {
  flex-shrink: 0;
  opacity: 0.3;
  transition: opacity 0.18s;
}
.dev-card-active:hover .li-arrow {
  opacity: 0.7;
}
/* ── Footer Bottom ───────────────────────── */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 2rem;
}
.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--s5);
  letter-spacing: 0.06em;
}

/* ── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 760px) {
  .cards {
    grid-template-columns: 1fr;
  }
  .card-visual {
    height: 120px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}
@media (max-width: 640px) {
  .hero h1 {
    font-size: 36px;
  }
  .nav {
    padding: 0 16px;
  }
  .p2p-receive-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .p2p-accept-btn,
  .p2p-decline-btn {
    max-width: 100%;
  }
  .transfer {
    padding: 60px 16px;
  }
}