/* Glass UI — trong suốt, mượt, tránh hiệu ứng nặng gây lag */
:root {
  --bg: #090b10;
  --bg-elevated: #0e121a;
  /* Glass — panel kính */
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: rgba(20, 24, 36, 0.55);
  --panel-soft: rgba(255, 255, 255, 0.05);
  --panel-glass: linear-gradient(
    155deg,
    rgba(255, 255, 255, 0.12) 0%,
    rgba(255, 255, 255, 0.04) 40%,
    rgba(12, 16, 28, 0.28) 100%
  );
  --panel-glass-solid: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.18);
  --border-strong: rgba(255, 255, 255, 0.28);
  --border-glow: rgba(88, 101, 242, 0.35);
  --glass-blur: 18px;
  --glass-sat: 1.35;
  --text: #eef1f8;
  --muted: #94a0b8;
  --blurple: #5865f2;
  --blurple-2: #4752c4;
  --green: #23a559;
  --green-soft: rgba(35, 165, 89, 0.14);
  --red: #f23f43;
  --red-soft: rgba(242, 63, 67, 0.12);
  --yellow: #f0b232;
  --yellow-soft: rgba(240, 178, 50, 0.12);
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.32);
  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.2);
  --radius: 18px;
  --radius-sm: 12px;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --sans: "Outfit", system-ui, -apple-system, sans-serif;
  --ease: 0.15s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

html,
body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  font-family: var(--sans);
  /* Nền màu rõ hơn để kính "thấy xuyên" */
  background:
    radial-gradient(1100px 560px at 50% -8%, rgba(88, 101, 242, 0.34), transparent 58%),
    radial-gradient(700px 480px at 95% 18%, rgba(35, 165, 89, 0.14), transparent 52%),
    radial-gradient(640px 420px at 5% 75%, rgba(120, 90, 255, 0.16), transparent 48%),
    radial-gradient(500px 360px at 70% 90%, rgba(88, 101, 242, 0.1), transparent 50%),
    var(--bg);
  background-attachment: fixed;
}

body {
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Lưới nhẹ — không mask phức tạp, không animation */
.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 56px 56px;
  /* contain repaint cost */
  contain: strict;
}

/* Glow tĩnh bằng gradient — KHÔNG dùng filter:blur (rất tốn GPU) */
.bg-glow {
  position: fixed;
  width: min(640px, 90vw);
  height: 420px;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(
    ellipse at center,
    rgba(88, 101, 242, 0.2) 0%,
    rgba(88, 101, 242, 0.06) 40%,
    transparent 70%
  );
  contain: strict;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 18px 56px;
}

/* —— Header —— */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--blurple), #7289da);
  color: white;
  box-shadow: 0 8px 22px rgba(88, 101, 242, 0.32);
  flex-shrink: 0;
}

.logo-img {
  object-fit: cover;
  padding: 0;
  background: #0f1118;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.header h1 {
  margin: 0;
  font-size: clamp(1.05rem, 2.5vw, 1.42rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  background: linear-gradient(180deg, #fff 30%, #c5cce0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.clock-live {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1px;
  padding: 8px 14px;
  border-radius: 14px;
  min-width: 118px;
}

.clock-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.clock-time {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: #e8ecff;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.clock-date {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.badge-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(35, 165, 89, 0.12);
  border: 1px solid rgba(35, 165, 89, 0.28);
  color: #6ee7a0;
  font-size: 0.82rem;
  font-weight: 600;
  backdrop-filter: none;
}

/* Pulse rẻ: chỉ opacity, không box-shadow lan */
.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  opacity: 1;
  animation: pulse-op 1.8s ease-in-out infinite;
}

@keyframes pulse-op {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

/* —— Panel kính (glassmorphism) —— */
.panel,
.panel.controls,
.panel.progress-panel,
.panel.results-panel,
.results-panel,
.stat,
.clock-live,
.tabs {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  /* lớp kính: trắng mờ + tối nhẹ */
  background: var(--panel-glass);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04),
    inset 1px 0 0 rgba(255, 255, 255, 0.06);
  contain: layout style;
}

.panel,
.panel.controls,
.panel.progress-panel,
.panel.results-panel,
.results-panel {
  padding: 20px;
}

/* Highlight mép trên như phản xạ kính */
.panel::before,
.panel.controls::before,
.panel.progress-panel::before,
.panel.results-panel::before,
.results-panel::before {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: 0;
  height: 1px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.55),
    transparent
  );
  pointer-events: none;
  z-index: 1;
}

/* Blur nền xuyên kính — desktop */
@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  @media (min-width: 901px) {
    .panel,
    .panel.controls,
    .panel.progress-panel,
    .panel.results-panel,
    .results-panel,
    .stat,
    .clock-live,
    .tabs {
      background:
        linear-gradient(
          155deg,
          rgba(255, 255, 255, 0.14) 0%,
          rgba(255, 255, 255, 0.05) 42%,
          rgba(10, 14, 24, 0.22) 100%
        );
      -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
      backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
    }
  }

  /* Mobile: blur nhẹ hơn (vẫn kiểu kính, đỡ tốn pin) */
  @media (max-width: 900px) {
    .panel,
    .panel.controls,
    .panel.progress-panel,
    .panel.results-panel,
    .results-panel,
    .stat,
    .clock-live,
    .tabs {
      background:
        linear-gradient(
          155deg,
          rgba(255, 255, 255, 0.12) 0%,
          rgba(255, 255, 255, 0.05) 45%,
          rgba(12, 16, 28, 0.35) 100%
        );
      -webkit-backdrop-filter: blur(10px) saturate(1.2);
      backdrop-filter: blur(10px) saturate(1.2);
    }
  }
}

.controls {
  margin-bottom: 14px;
}

.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  padding: 5px;
  border-radius: 14px;
  width: fit-content;
}

.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: background var(--ease), color var(--ease);
}

.tab:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.tab.active {
  background: var(--blurple);
  color: white;
  box-shadow: 0 4px 14px rgba(88, 101, 242, 0.35);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 16px;
}

.form-grid.speed-row {
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.notify-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.btn-notify {
  border: 1px solid rgba(88, 101, 242, 0.4);
  background: rgba(88, 101, 242, 0.16);
  color: #c9d0ff;
  font: inherit;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 16px;
  border-radius: 11px;
  cursor: pointer;
  transition: background var(--ease), color var(--ease);
}

.btn-notify:hover {
  background: rgba(88, 101, 242, 0.28);
  color: #fff;
}

.btn-notify.on {
  border-color: rgba(35, 165, 89, 0.45);
  background: rgba(35, 165, 89, 0.16);
  color: #8ef0b4;
}

/* Owner-only panel (IP allowlist) — ẩn với user public */
.owner-row {
  display: flex;
  align-items: center;
  gap: 12px 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(88, 101, 242, 0.35);
  background: linear-gradient(
    135deg,
    rgba(88, 101, 242, 0.12),
    rgba(35, 165, 89, 0.08)
  );
}

.owner-row[hidden] {
  display: none !important;
}

.owner-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.88rem;
  color: #c9d0ff;
  letter-spacing: 0.02em;
}

.owner-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #57f287;
  box-shadow: 0 0 0 3px rgba(87, 242, 135, 0.25);
  animation: owner-pulse 1.6s ease-in-out infinite;
}

@keyframes owner-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

.owner-toggle {
  margin: 0 !important;
  min-width: 220px;
}

.owner-status {
  font-size: 0.82rem;
  color: var(--muted, #9aa3b5);
  flex: 1 1 160px;
}

.btn-test-sound {
  border: 1px solid rgba(35, 165, 89, 0.4);
  background: rgba(35, 165, 89, 0.14);
  color: #9ef0b8;
  font: inherit;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 16px;
  border-radius: 11px;
  cursor: pointer;
  transition: background var(--ease), color var(--ease);
}

.btn-test-sound:hover {
  background: rgba(35, 165, 89, 0.28);
  color: #fff;
}

.notify-status {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
}

/* Toast free / 429 — fixed theo viewport, luôn nổi khi scroll toàn trang */
.free-toast {
  position: fixed !important;
  top: max(16px, env(safe-area-inset-top, 0px)) !important;
  right: max(16px, env(safe-area-inset-right, 0px)) !important;
  left: auto !important;
  bottom: auto !important;
  /* Trên mọi layer, không bị panel/list che */
  z-index: 2147483000 !important;
  max-width: min(360px, calc(100vw - 32px));
  padding: 14px 16px;
  border-radius: 14px;
  background: linear-gradient(
    145deg,
    rgba(35, 165, 89, 0.95),
    rgba(20, 120, 70, 0.95)
  );
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.4;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  animation: toast-in 0.25s ease;
  /* Không bị scroll container / parent clip */
  pointer-events: none;
  margin: 0;
  /* Tách stacking context khỏi app */
  isolation: isolate;
  /* Không scroll theo document */
  transform: translateZ(0);
  will-change: transform, opacity;
}

.free-toast.warn {
  background: linear-gradient(
    145deg,
    rgba(240, 178, 50, 0.95),
    rgba(180, 120, 20, 0.95)
  );
  color: #fff;
}

.free-toast[hidden] {
  display: none !important;
}

/* Cửa sổ popup modal giữa trang (in-app) — không phải toast góc / alert trình duyệt */
body.modal-open {
  overflow: hidden;
}

.app-modal {
  position: fixed !important;
  inset: 0 !important;
  z-index: 2147483646 !important;
  display: flex !important;
  align-items: center;
  justify-content: center;
  padding: 20px;
  isolation: isolate;
  pointer-events: auto;
}

.app-modal[hidden] {
  display: none !important;
}

.app-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.app-modal-window {
  position: relative;
  z-index: 1;
  width: min(420px, 100%);
  padding: 28px 24px 22px;
  border-radius: 18px;
  background: linear-gradient(
    160deg,
    rgba(42, 46, 62, 0.99),
    rgba(18, 20, 30, 0.99)
  );
  border: 1px solid rgba(255, 200, 80, 0.28);
  box-shadow:
    0 28px 72px rgba(0, 0, 0, 0.65),
    0 0 0 1px rgba(255, 200, 80, 0.12),
    0 0 40px rgba(240, 178, 50, 0.12);
  text-align: center;
  animation: modal-pop 0.22s ease;
  pointer-events: auto;
}

.app-modal-icon {
  font-size: 2rem;
  line-height: 1;
  margin-bottom: 10px;
}

.app-modal-title {
  margin: 0 0 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

.app-modal-message {
  margin: 0 0 20px;
  font-size: 0.95rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.82);
  white-space: pre-line;
}

.app-modal-ok {
  min-width: 120px;
}

@keyframes modal-pop {
  from {
    opacity: 0;
    transform: scale(0.94) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-8px) translateZ(0);
  }
  to {
    opacity: 1;
    transform: translateY(0) translateZ(0);
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
}

.field.full {
  margin-bottom: 14px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 11px;
  color: var(--text);
  font: inherit;
  padding: 11px 12px;
  outline: none;
  transition: border-color var(--ease), box-shadow var(--ease);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

/* Min / Max around quantity input */
.qty-control {
  display: flex;
  align-items: stretch;
  gap: 6px;
}

.qty-control input {
  flex: 1 1 auto;
  min-width: 0;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.btn-qty {
  flex: 0 0 auto;
  min-width: 48px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 0 12px;
  cursor: pointer;
  transition: background var(--ease), border-color var(--ease), color var(--ease);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.btn-qty:hover {
  background: rgba(88, 101, 242, 0.22);
  border-color: rgba(88, 101, 242, 0.55);
  color: #fff;
}

.btn-qty:active {
  background: rgba(88, 101, 242, 0.35);
}

.qty-control input:focus {
  border-color: rgba(88, 101, 242, 0.65);
  box-shadow: 0 0 0 3px rgba(88, 101, 242, 0.18);
}

.field textarea {
  font-family: var(--mono);
  font-size: 0.9rem;
  resize: vertical;
  min-height: 100px;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(88, 101, 242, 0.65);
  box-shadow: 0 0 0 3px rgba(88, 101, 242, 0.18);
}

.field select.field-invalid,
.field-invalid {
  border-color: var(--red) !important;
  box-shadow: 0 0 0 3px rgba(242, 63, 67, 0.25) !important;
}

.checkbox-field {
  justify-content: space-between;
}

.switch {
  position: relative;
  width: 48px;
  height: 28px;
  display: inline-block;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  inset: 0;
  background: #2a3140;
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--ease);
  border: 1px solid var(--border-strong);
}

.slider::before {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  left: 3px;
  top: 3px;
  background: white;
  border-radius: 50%;
  transition: transform var(--ease);
}

.switch input:checked + .slider {
  background: var(--green);
  border-color: transparent;
}

.switch input:checked + .slider::before {
  transform: translateX(20px);
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  border: 0;
  border-radius: 12px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  padding: 12px 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background var(--ease), transform var(--ease), opacity var(--ease);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(180deg, #6b78f7, var(--blurple));
  color: white;
  box-shadow: 0 8px 20px rgba(88, 101, 242, 0.32);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border: 1px solid var(--border-strong);
}

.btn-ghost:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.09);
}

.btn-sm {
  padding: 7px 12px;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-sm.ghost {
  background: transparent;
}

.btn-sm:hover {
  background: rgba(255, 255, 255, 0.1);
}

.loop-hint {
  margin: 0.25rem 0 0.75rem;
  font-size: 0.85rem;
}

.hint {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.hint code {
  font-family: var(--mono);
  font-size: 0.8em;
  background: rgba(255, 255, 255, 0.06);
  padding: 1px 6px;
  border-radius: 5px;
}

.text-available {
  color: #6ee7a0;
}

/* —— Stats glass chips —— */
.stats-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.stat {
  border-radius: 14px;
  padding: 12px 14px;
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 5px;
}

.stat-value {
  font-size: 1.45rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.stat.available {
  border-color: rgba(100, 220, 150, 0.35);
  background:
    linear-gradient(
      155deg,
      rgba(80, 220, 140, 0.18) 0%,
      rgba(35, 165, 89, 0.08) 50%,
      rgba(10, 40, 24, 0.2) 100%
    );
}
.stat.available .stat-value {
  color: #6ee7a0;
}
.stat.taken .stat-value {
  color: #ff8b8e;
}
.stat.error .stat-value {
  color: var(--yellow);
}
.stat.skip .stat-value {
  color: #9aa3b8;
}

.progress-panel {
  margin-bottom: 14px;
}

.progress-panel.hidden {
  display: none;
}

.progress-head {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 10px;
  gap: 10px;
}

.progress-bar {
  height: 9px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blurple), #23a559);
  border-radius: 999px;
  /* width update liên tục — transition ngắn, không filter */
  transition: width 0.18s linear;
  will-change: width;
}

.current-check {
  margin: 10px 0 0;
  font-family: var(--mono);
  color: var(--muted);
  font-size: 0.85rem;
}

.results-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 12px;
}

/* Results — cùng glass */
.results-panel {
  /* kế thừa .panel glass */
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.panel-head h2 {
  margin: 0;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-actions {
  display: flex;
  gap: 6px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

.dot.available {
  background: var(--green);
}

.dot.log {
  background: var(--blurple);
}

.count-pill {
  background: var(--green-soft);
  color: #6ee7a0;
  border: 1px solid rgba(35, 165, 89, 0.28);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 700;
}

.name-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 420px;
  overflow: auto;
  min-height: 120px;
  /* scroll mượt, tránh overscroll chaining */
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.name-list.empty-state {
  color: var(--muted);
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 28px 12px;
}

/* Không animate từng card khi re-render list (gây lag khi nhiều free) */
.name-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background:
    linear-gradient(
      145deg,
      rgba(90, 230, 150, 0.16),
      rgba(35, 165, 89, 0.08)
    );
  border: 1px solid rgba(120, 240, 170, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14);
  contain: layout style;
}

.name-card .handle {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: #9ef0b8;
}

.name-card .meta .drop-time {
  color: #8ef0b4;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.name-card .meta .drop-sep {
  opacity: 0.55;
  margin: 0 2px;
}

.name-card .meta {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 2px;
}

.name-card .copy-one {
  background: rgba(35, 165, 89, 0.18);
  border: 1px solid rgba(35, 165, 89, 0.32);
  color: #9ef0b8;
  border-radius: 8px;
  padding: 7px 10px;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--ease);
}

.name-card .copy-one:hover {
  background: rgba(35, 165, 89, 0.32);
}

.log-list {
  max-height: 420px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.log-item {
  display: flex;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
  content-visibility: auto;
  contain-intrinsic-size: auto 28px;
}

.log-item.available {
  background: var(--green-soft);
  color: #9ef0b8;
}

.log-item.taken {
  color: #ffb0b2;
  background: var(--red-soft);
}

.log-item.error {
  color: #f6d47a;
  background: var(--yellow-soft);
}

.log-item.skip {
  color: #f0c86a;
  background: var(--yellow-soft);
  border-color: rgba(240, 178, 50, 0.35);
}

.log-item.info {
  color: #a8b4e0;
}

.log-item .tag {
  font-weight: 700;
  min-width: 72px;
  flex-shrink: 0;
}

.log-item.available .tag {
  color: #9ef0b8;
}
.log-item.taken .tag {
  color: #ff8a8e;
}
.log-item.skip .tag {
  color: var(--yellow);
}
.log-item.error .tag {
  color: #f6d47a;
}

.muted {
  color: var(--muted);
}

.footer {
  margin-top: 22px;
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.footer code {
  font-family: var(--mono);
  font-size: 0.78em;
  background: rgba(255, 255, 255, 0.05);
  padding: 1px 5px;
  border-radius: 4px;
}

.footer p {
  margin: 6px 0;
}

/* Scrollbars gọn */
.name-list,
.log-list {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.16) transparent;
}

.name-list::-webkit-scrollbar,
.log-list::-webkit-scrollbar {
  width: 7px;
}
.name-list::-webkit-scrollbar-thumb,
.log-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
}

/* Máy yếu / giảm motion: bỏ blur, giữ nền kính mờ */
@media (prefers-reduced-motion: reduce) {
  .pulse {
    animation: none;
  }
  .free-toast {
    animation: none;
  }
  .progress-fill {
    transition: none;
  }
  .panel,
  .panel.controls,
  .panel.progress-panel,
  .panel.results-panel,
  .results-panel,
  .stat,
  .clock-live,
  .tabs {
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
    background:
      linear-gradient(
        155deg,
        rgba(255, 255, 255, 0.12),
        rgba(18, 22, 34, 0.55)
      ) !important;
  }
}

@media (max-width: 900px) {
  .form-grid,
  .form-grid.speed-row {
    grid-template-columns: 1fr 1fr;
  }
  .stats-row {
    grid-template-columns: 1fr 1fr;
  }
  .results-layout {
    grid-template-columns: 1fr;
  }
  html,
  body {
    background-attachment: scroll;
  }
}

@media (max-width: 560px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
  .app {
    padding: 18px 12px 40px;
  }
  .header h1 {
    font-size: 1.2rem;
    /* clip text gradient có thể mờ trên mobile nhỏ — fallback solid */
    color: var(--text);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
  }
}