:root {
  /* Chủ đề cyan / indigo — nền tối, chữ dễ đọc */
  --accent: #5eead4;
  --accent-strong: #2dd4bf;
  --accent-muted: #14b8a6;
  --accent-violet: #a78bfa;
  --text-body: #ccfbf1;
  --text-dim: #94a3b8;
  --glow: rgba(45, 212, 191, 0.35);
  --glow-soft: rgba(45, 212, 191, 0.14);
  --glow-violet: rgba(167, 139, 250, 0.2);
  --bg: #0b0f1a;
  --bg-elevated: #12182a;
  --surface: #161d32;
  --border: rgba(94, 234, 212, 0.38);
  --border-subtle: rgba(129, 140, 248, 0.22);
  --err: #fb7185;
  --err-glow: rgba(251, 113, 133, 0.4);
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --font: "JetBrains Mono", "Cascadia Code", "Consolas", "Courier New", monospace;
  --shadow-panel: 0 4px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border-subtle),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --transition: 0.2s ease;
  --btn-text: #0a0f18;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-body);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(20px, 4vw, 36px) clamp(14px, 3vw, 24px) 48px;
  position: relative;
  overflow-x: hidden;
  background: var(--bg);
  background-image: radial-gradient(ellipse 120% 70% at 50% -15%, rgba(45, 212, 191, 0.12), transparent 55%),
    radial-gradient(ellipse 90% 60% at 100% 0%, rgba(99, 102, 241, 0.14), transparent 50%),
    radial-gradient(ellipse 70% 50% at 0% 100%, rgba(20, 184, 166, 0.08), transparent 45%);
}

.shell {
  position: relative;
  z-index: 1;
  width: min(100%, 560px);
}

.head {
  text-align: center;
  margin-bottom: clamp(20px, 4vw, 28px);
}

.head__title {
  margin: 0 auto 20px;
  max-width: 26ch;
  font-size: clamp(1.12rem, 3.6vw, 1.58rem);
  font-weight: 800;
  letter-spacing: 0.13em;
  word-spacing: 0.12em;
  line-height: 1.22;
  text-transform: uppercase;
  color: var(--accent-strong);
  text-rendering: geometricPrecision;
  text-shadow: 0 0 18px rgba(45, 212, 191, 0.45), 0 0 36px rgba(45, 212, 191, 0.22),
    0 0 52px rgba(167, 139, 250, 0.18);
  padding-bottom: 20px;
  border-bottom: none;
  position: relative;
}

.head__title::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: min(94%, 20.5rem);
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(45, 212, 191, 0.2) 18%,
    var(--accent) 48%,
    var(--accent-violet) 72%,
    transparent 100%
  );
  box-shadow: 0 0 14px rgba(45, 212, 191, 0.45), 0 0 28px rgba(129, 140, 248, 0.2);
  pointer-events: none;
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .head__title {
    background: linear-gradient(
      118deg,
      #ecfeff 0%,
      #99f6e4 14%,
      #2dd4bf 36%,
      #5eead4 52%,
      #818cf8 74%,
      #ddd6fe 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
    filter: drop-shadow(0 0 5px rgba(94, 234, 212, 0.65)) drop-shadow(0 0 18px rgba(45, 212, 191, 0.4))
      drop-shadow(0 0 38px rgba(129, 140, 248, 0.2));
  }
}

.head__cmd,
.head__ex {
  margin: 8px 0;
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  line-height: 1.55;
  color: var(--text-dim);
}

.head__hl {
  color: var(--accent-violet);
  font-weight: 600;
  text-shadow: 0 0 14px var(--glow-violet);
}

.head__legend {
  margin-top: 20px;
  padding: 16px 18px;
  text-align: left;
  border-radius: var(--radius-md);
  border: 1px solid rgba(248, 113, 113, 0.35);
  background: linear-gradient(
    165deg,
    rgba(45, 20, 28, 0.55),
    rgba(15, 14, 26, 0.92)
  );
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.head__legend .head__cmd {
  margin: 6px 0;
  color: #fca5a5;
}

/* Chú thích mã: toàn bộ tone đỏ */
.head__legend .head__hl {
  color: #f87171;
  font-weight: 600;
  text-shadow: 0 0 12px rgba(248, 113, 113, 0.45);
}

.head__legend-title {
  margin: 0 0 10px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: #fb7185;
  opacity: 0.98;
  text-shadow: 0 0 10px rgba(251, 113, 133, 0.25);
}

.panel {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg-elevated) 100%);
  padding: 22px 20px 24px;
  box-shadow: var(--shadow-panel);
}

/* Khung có hiệu ứng “quét” dữ liệu (scan line) */
.scan-frame {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.scan-frame::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  width: 100%;
  height: 3px;
  top: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(45, 212, 191, 0.15) 25%,
    var(--accent-strong) 48%,
    var(--accent-violet) 50%,
    var(--accent-strong) 52%,
    rgba(45, 212, 191, 0.15) 75%,
    transparent 100%
  );
  box-shadow: 0 0 14px var(--glow), 0 0 28px var(--glow-violet);
  opacity: 0.9;
  animation: scan-line-y 2.75s ease-in-out infinite;
  pointer-events: none;
  z-index: 3;
  border-radius: 2px;
}

.scan-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(45, 212, 191, 0.03) 45%,
    rgba(167, 139, 250, 0.06) 50%,
    rgba(45, 212, 191, 0.03) 55%,
    transparent 100%
  );
  background-size: 100% 220%;
  animation: scan-shimmer 3.4s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes scan-line-y {
  0% {
    top: -4px;
    opacity: 0;
  }
  8% {
    opacity: 1;
  }
  92% {
    opacity: 1;
  }
  100% {
    top: calc(100% - 2px);
    opacity: 0;
  }
}

@keyframes scan-shimmer {
  0%,
  100% {
    background-position: 0 -40%;
    opacity: 0.35;
  }
  50% {
    background-position: 0 140%;
    opacity: 0.55;
  }
}

.panel > * {
  position: relative;
  z-index: 2;
}

.panel__label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  margin-bottom: 10px;
  color: var(--accent-strong);
}

.panel__input + .panel__label {
  margin-top: 18px;
}

.panel__input {
  width: 100%;
  min-height: 48px;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.45;
  color: var(--accent-strong);
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.panel__input::placeholder {
  color: var(--text-dim);
  opacity: 0.65;
  font-weight: 400;
}

.panel__input:hover {
  border-color: rgba(45, 212, 191, 0.35);
}

.panel__input:focus {
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 3px var(--glow-soft), 0 0 24px var(--glow-soft);
}

.panel__hint {
  min-height: 1.35em;
  margin-top: 12px;
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--text-dim);
}

.panel__hint.is-err {
  color: var(--err);
  text-shadow: 0 0 12px var(--err-glow);
}

.panel__hint.is-ok {
  color: var(--accent-strong);
  text-shadow: 0 0 10px var(--glow-soft);
}

.panel__btn {
  margin-top: 18px;
  width: 100%;
  min-height: 50px;
  padding: 14px 18px;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--btn-text);
  background: linear-gradient(180deg, #5eead4 0%, #2dd4bf 40%, #14b8a6 100%);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: 0 2px 16px var(--glow), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  transition: transform var(--transition), filter var(--transition), box-shadow var(--transition);
}

.panel__btn:hover:not(:disabled) {
  filter: brightness(1.08);
  box-shadow: 0 4px 20px var(--glow), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.panel__btn:active:not(:disabled) {
  transform: translateY(1px);
}

.panel__btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  filter: grayscale(0.15);
}

.out-title {
  margin: 24px 0 12px;
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  color: var(--accent-muted);
}

.out-title--sm {
  margin: 24px 0 12px;
  font-size: 0.8125rem;
  letter-spacing: 0.35em;
}

.out-box {
  position: relative;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(8, 12, 22, 0.55);
  min-height: 160px;
  padding: 18px 18px 20px;
  box-shadow: inset 0 0 0 1px rgba(45, 212, 191, 0.08), inset 0 2px 28px rgba(0, 0, 0, 0.4);
}

.out-box > * {
  position: relative;
  z-index: 2;
}

.out-box.is-loading {
  min-height: 232px;
}

.out-box.is-loading .out-view {
  visibility: hidden;
  position: absolute;
  pointer-events: none;
  inset: 18px 18px;
}

.out-box__loader {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 28px 18px;
  background: rgba(10, 14, 26, 0.96);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  text-align: center;
}

.out-box__loader[hidden] {
  display: none !important;
}

.loader-orbit {
  width: 46px;
  height: 46px;
  border: 2px solid var(--border-subtle);
  border-top-color: var(--accent-strong);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  box-shadow: 0 0 16px var(--glow-soft);
}

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

.loader-line {
  margin: 0;
  max-width: 280px;
  font-size: 0.8125rem;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-shadow: 0 0 14px var(--glow-soft);
}

.loader-line--dim {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-shadow: none;
}

.loader-count {
  margin: 2px 0 0;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--accent-strong);
  text-shadow: 0 0 14px var(--glow-soft);
  font-variant-numeric: tabular-nums;
}

.loader-bar {
  width: min(100%, 260px);
  height: 5px;
  margin-top: 6px;
  border-radius: 999px;
  background: rgba(45, 212, 191, 0.12);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}

.loader-bar__fill {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-muted), var(--accent), var(--accent-violet));
  box-shadow: 0 0 14px var(--glow);
}

.loader-bar__fill.is-run {
  animation: loadBar 3s linear forwards;
}

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

/* --- Kết quả: layout có cấu trúc --- */
.out-view {
  font-size: 0.875rem;
  line-height: 1.55;
  letter-spacing: 0.02em;
}

.out-view__placeholder {
  margin: 0;
  padding: 8px 0 4px;
  font-size: 0.8125rem;
  color: var(--text-dim);
  text-align: center;
  letter-spacing: 0.06em;
  opacity: 0.85;
}

.out-view--idle {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.out-plain__line {
  padding: 3px 0 3px 12px;
  border-left: 2px solid rgba(45, 212, 191, 0.25);
  margin: 0;
  font-family: inherit;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-body);
  white-space: pre-wrap;
  word-break: break-word;
}

.out-plain__line--err {
  border-left-color: var(--err);
  color: #fecdd3;
  text-shadow: 0 0 12px var(--err-glow);
}

.out-plain__gap {
  height: 10px;
}

.out-view--error .out-plain__line:not(.out-plain__line--err) {
  color: var(--text-dim);
  border-left-color: rgba(148, 163, 184, 0.3);
}

.out-section--log {
  margin: 0;
  padding: 14px 14px 16px;
  border-radius: var(--radius-sm);
  background: linear-gradient(165deg, rgba(22, 29, 50, 0.92), rgba(10, 14, 26, 0.72));
  border: 1px solid rgba(45, 212, 191, 0.18);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.out-section__head {
  margin: 0 0 12px;
  padding-bottom: 8px;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent-muted);
  border-bottom: 1px dashed rgba(94, 234, 212, 0.22);
}

.out-kv {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.out-kv__row {
  display: grid;
  grid-template-columns: minmax(6.5rem, 32%) 1fr;
  gap: 10px 14px;
  align-items: baseline;
  padding: 6px 0;
  border-bottom: 1px solid rgba(94, 234, 212, 0.06);
}

.out-kv__row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.out-kv__k {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-muted);
  opacity: 0.92;
}

.out-kv__v {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-body);
  word-break: break-word;
}

.out-divider {
  height: 1px;
  margin: 18px 0 16px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(94, 234, 212, 0.35) 20%,
    rgba(167, 139, 250, 0.35) 80%,
    transparent
  );
  opacity: 0.9;
}

.out-banner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(52, 211, 153, 0.35);
  background: linear-gradient(120deg, rgba(6, 78, 59, 0.35), rgba(15, 23, 42, 0.65));
  box-shadow: 0 0 20px rgba(45, 212, 191, 0.12);
}

.out-banner__mark {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-top: 1px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 700;
  color: #022c22;
  background: linear-gradient(180deg, #6ee7b7, #34d399);
  box-shadow: 0 0 14px rgba(52, 211, 153, 0.45);
}

.out-banner__msg {
  margin: 0;
  padding-top: 2px;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.03em;
  color: #a7f3d0;
}

.out-card {
  margin-top: 16px;
  padding: 16px 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(129, 140, 248, 0.28);
  background: linear-gradient(145deg, rgba(30, 27, 75, 0.35), rgba(15, 23, 42, 0.85));
  box-shadow: inset 0 1px 0 rgba(167, 139, 250, 0.08), 0 8px 24px rgba(0, 0, 0, 0.35);
}

.out-card__title {
  margin: 0 0 12px;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.35;
  color: #e9d5ff;
  text-shadow: 0 0 18px rgba(167, 139, 250, 0.25);
}

.out-card__p {
  margin: 0 0 10px;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: #cbd5e1;
}

.out-card__p:last-child {
  margin-bottom: 0;
}

.out-card__p--muted {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-style: italic;
  opacity: 0.95;
}

@media (max-width: 420px) {
  .out-kv__row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

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

.out-view--success .out-section--log {
  animation: out-in 0.42s ease both;
}

.out-view--success .out-banner {
  animation: out-in 0.42s ease 0.07s both;
}

.out-view--success .out-card {
  animation: out-in 0.42s ease 0.14s both;
}

.foot {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px dashed var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.foot__user {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.foot__logout {
  font-family: inherit;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 10px 16px;
  color: var(--text-body);
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), box-shadow var(--transition);
}

.foot__logout:hover {
  color: var(--accent-strong);
  border-color: var(--accent-muted);
  box-shadow: 0 0 16px var(--glow-soft);
}

@media (prefers-reduced-motion: reduce) {
  .loader-orbit,
  .loader-bar__fill.is-run {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .scan-frame::before,
  .scan-frame::after {
    animation: none !important;
    opacity: 0.25;
  }

  .out-view--success .out-section--log,
  .out-view--success .out-banner,
  .out-view--success .out-card {
    animation: none !important;
  }

  .panel__btn:active:not(:disabled) {
    transform: none;
  }
}