/* ── Theme: GitHub Light ── */
:root {
  --color-canvas: #ffffff;
  --color-canvas-subtle: #f6f8fa;
  --color-canvas-inset: #eff2f5;
  --color-fg: #1f2328;
  --color-fg-muted: #656d76;
  --color-fg-accent: #0969da;
  --color-border: #d0d7de;
  --color-border-muted: #d8dee4;
  --color-neutral-muted: rgba(175, 184, 193, 0.2);
  --color-accent: #0969da;
  --color-accent-glow: rgba(9, 105, 218, 0.5);
  --color-success: #1a7f37;
  --color-success-glow: rgba(26, 127, 55, 0.6);
  --color-danger: #cf222e;
  --color-danger-glow: rgba(207, 34, 46, 0.6);
  --color-header-bg: #24292f;
  --color-header-text: #ffffff;
  --color-flow-step: #ddf4ff;
  --color-flow-step-text: #1f2328;
  --color-cdn-bg: #0969da;
  --color-origin-bg: #6e7781;
  --color-origin-border: #57606a;
  --packet-size: 14px;
  --packet-trail: 30px;
}

/* ── Theme: GitHub Dark ── */
[data-theme="dark"] {
  --color-canvas: #0d1117;
  --color-canvas-subtle: #161b22;
  --color-canvas-inset: #010409;
  --color-fg: #e6edf3;
  --color-fg-muted: #7d8590;
  --color-fg-accent: #58a6ff;
  --color-border: #30363d;
  --color-border-muted: #21262d;
  --color-neutral-muted: rgba(110, 118, 129, 0.2);
  --color-accent: #58a6ff;
  --color-accent-glow: rgba(88, 166, 255, 0.5);
  --color-success: #3fb950;
  --color-success-glow: rgba(63, 185, 80, 0.6);
  --color-danger: #f85149;
  --color-danger-glow: rgba(248, 81, 73, 0.6);
  --color-header-bg: #010409;
  --color-header-text: #f0f6fc;
  --color-flow-step: #161b22;
  --color-flow-step-text: #e6edf3;
  --color-cdn-bg: #1f6feb;
  --color-origin-bg: #484f58;
  --color-origin-border: #6e7781;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  font-size: 14px;
  background: var(--color-canvas);
  color: var(--color-fg);
  line-height: 1.5;
  transition: background 0.2s, color 0.2s;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ── */
header {
  background: var(--color-header-bg);
  color: var(--color-header-text);
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.header-content {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 0 1rem;
}

.header-logos {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.logo { height: 26px; width: auto; object-fit: contain; }
.logo-akamai { height: 24px; }

.logo-separator {
  font-size: 0.85rem;
  opacity: 0.4;
  font-weight: 300;
}

.header-text h1 { font-size: 1rem; font-weight: 600; line-height: 1.3; }
.subtitle { opacity: 0.7; font-size: 0.75rem; }

/* ── Theme toggle ── */
.theme-toggle {
  margin-left: auto;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  color: var(--color-header-text);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: border-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover { border-color: rgba(255, 255, 255, 0.5); }

.theme-toggle .material-symbols-outlined { font-size: 18px; }

.btn-logout {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  color: var(--color-header-text);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: border-color 0.2s, background 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-logout:hover {
  border-color: var(--color-danger);
  background: var(--color-danger);
}

.btn-logout .material-symbols-outlined { font-size: 18px; }

/* ── Main ── */
main {
  max-width: 900px;
  width: 100%;
  margin: 8px auto;
  padding: 0 1rem;
  flex: 1;
}

section {
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 8px;
  transition: background 0.2s;
}

h2 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-fg);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
}

/* ── Architecture flow ── */
.flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 4px 0;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  background: var(--color-flow-step);
  color: var(--color-flow-step-text);
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  animation: stepIn 0.4s ease both;
  animation-delay: calc(var(--step) * 0.3s);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.flow-step.animated { animation: none; opacity: 1; transform: none; }

.flow-step small { font-size: 10px; font-weight: 400; opacity: 0.7; }
.flow-icon { font-size: 20px; margin-bottom: 2px; }

.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
}

.flow-step.cdn {
  background: var(--color-cdn-bg);
  color: #fff;
  border-color: var(--color-cdn-bg);
  position: relative;
  box-shadow: 0 0 0 0 var(--color-accent-glow);
  animation: stepIn 0.4s ease both, cdnPulse 2.5s ease-in-out 1.5s infinite;
  animation-delay: calc(var(--step) * 0.3s), 1.5s;
}

.flow-step.cdn.animated {
  animation: cdnPulse 2.5s ease-in-out infinite;
  opacity: 1;
  transform: none;
}

.flow-step.origin {
  background: var(--color-origin-bg);
  color: #fff;
  border-color: var(--color-origin-border);
}

/* ── Flow arrows ── */
.flow-arrow {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 4px;
  position: relative;
  min-width: 36px;
  justify-content: center;
  animation: stepIn 0.3s ease both;
  animation-delay: calc(var(--step) * 0.3s);
}

.flow-arrow.animated { animation: none; opacity: 1; transform: none; }

.arrow-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0.3;
  animation: dotTravel 1.5s ease-in-out infinite;
}

.arrow-dot:nth-child(1) { animation-delay: 0s; }
.arrow-dot:nth-child(2) { animation-delay: 0.2s; }
.arrow-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes stepIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes dotTravel {
  0%, 100% { opacity: 0.2; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.3); }
}

@keyframes cdnPulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--color-accent-glow); }
  50% { box-shadow: 0 0 0 8px transparent; }
}

/* ── Packet ── */
.packet {
  position: absolute;
  width: var(--packet-size);
  height: var(--packet-size);
  border-radius: 50%;
  background: var(--color-accent);
  top: 50%;
  left: -14px;
  transform: translateY(-50%);
  opacity: 0;
  z-index: 2;
  pointer-events: none;
  box-shadow: 0 0 8px var(--color-accent-glow), 0 0 20px var(--color-accent-glow);
}

.packet::after {
  content: '';
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  width: var(--packet-trail);
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(to left, var(--color-accent), transparent);
}

.packet.active { opacity: 1; animation: packetMove 0.5s ease-in-out forwards; }

.packet.blocked {
  background: var(--color-danger);
  box-shadow: 0 0 8px var(--color-danger-glow), 0 0 20px var(--color-danger-glow);
}

.packet.blocked::after { background: linear-gradient(to left, var(--color-danger), transparent); }

@keyframes packetMove {
  from { left: -14px; opacity: 1; }
  to { left: calc(100% + 4px); opacity: 1; }
}

/* ── Scan bar ── */
.scan-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 0 0 6px 6px;
  overflow: hidden;
  z-index: 1;
}

.scan-bar::after {
  content: '';
  display: block;
  width: 0;
  height: 100%;
  background: #fff;
  border-radius: 2px;
  opacity: 0;
}

.flow-step.cdn.scanning {
  animation: cdnScanPulse 0.6s ease-in-out infinite;
  opacity: 1;
  transform: none;
}

.flow-step.cdn.scanning .scan-bar::after {
  opacity: 0.9;
  animation: scanProgress 1s ease-in-out forwards;
}

.flow-step.cdn.scan-ok {
  animation: none;
  opacity: 1;
  transform: none;
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px var(--color-success-glow), 0 0 16px var(--color-success-glow);
}

.flow-step.cdn.scan-blocked {
  animation: shake 0.4s ease-in-out;
  opacity: 1;
  transform: none;
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px var(--color-danger-glow), 0 0 16px var(--color-danger-glow);
}

@keyframes scanProgress { from { width: 0; } to { width: 100%; } }

@keyframes cdnScanPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
}

/* ── Step highlight ── */
.flow-step.active-step {
  transform: scale(1.08);
  box-shadow: 0 0 12px var(--color-accent-glow);
}

.flow-step.origin.received {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px var(--color-success-glow), 0 0 16px var(--color-success-glow);
}

/* ── Drop zone ── */
.drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: 6px;
  padding: 1.25rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--color-accent);
  background: var(--color-canvas-subtle);
}

.drop-zone p { color: var(--color-fg-muted); font-size: 13px; }

/* ── Progress ── */
.progress-bar {
  height: 4px;
  background: var(--color-neutral-muted);
  border-radius: 2px;
  margin-top: 8px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0;
  background: var(--color-accent);
  border-radius: 2px;
  transition: width 0.3s;
}

/* ── Results table ── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

thead th {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-fg-muted);
  font-weight: 600;
}

tbody td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-border-muted);
  word-break: break-all;
}

tbody tr { animation: rowIn 0.3s ease; }

@keyframes rowIn {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

.status-accepted { color: var(--color-success); font-weight: 600; }
.status-blocked { color: var(--color-danger); font-weight: 600; }

.btn-delete {
  background: none;
  border: none;
  color: var(--color-fg-muted);
  cursor: pointer;
  padding: 2px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, background 0.2s;
}

.btn-delete:hover {
  color: var(--color-danger);
  background: var(--color-neutral-muted);
}

.btn-delete:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-delete .material-symbols-outlined { font-size: 16px; }

.no-results {
  text-align: center;
  color: var(--color-fg-muted);
  padding: 8px 0;
  font-size: 12px;
}

/* ── Footer ── */
footer {
  text-align: center;
  padding: 8px 1rem;
  color: var(--color-fg-muted);
  font-size: 11px;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}