@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Sora:wght@400;600;700&display=swap");

:root {
  --bg: #f6f3ee;
  --bg-accent: #f0e8dd;
  --card: #ffffff;
  --card-accent: #f5f1ea;
  --ink: #1b2a34;
  --muted: #5d6a78;
  --accent: #2f6f7e;
  --accent-strong: #1c4f5c;
  --success: #1f8f68;
  --warning: #d98f3f;
  --error: #cf4a4a;
  --border: #e4ded6;
  --shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
  --font: "Sora", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", monospace;
}

body.dark-mode {
  --bg: #101724;
  --bg-accent: #141c2b;
  --card: #1b2433;
  --card-accent: #232f42;
  --ink: #f4f7fb;
  --muted: #a8b3c4;
  --accent: #4f8cff;
  --accent-strong: #3c6fe0;
  --success: #2bd18f;
  --warning: #f2b96a;
  --error: #f26b6b;
  --border: rgba(255, 255, 255, 0.1);
  --shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: radial-gradient(circle at top, #fbf8f3 0%, var(--bg) 60%) fixed;
}

body.dark-mode {
  background: radial-gradient(circle at top, #1b273d 0%, var(--bg) 60%) fixed;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hero {
  position: relative;
  padding: 4.5rem 1.5rem 2rem;
  overflow: hidden;
}

.hero__glow {
  position: absolute;
  inset: -40% 0 auto;
  height: 320px;
  background: radial-gradient(circle, rgba(47, 111, 126, 0.2), transparent 70%);
  z-index: 0;
}

body.dark-mode .hero__glow {
  background: radial-gradient(
    circle,
    rgba(79, 140, 255, 0.25),
    transparent 70%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
}

.hero__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
}

.hero h1 {
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  margin: 0.5rem 0 0.75rem;
}

.subtitle {
  font-size: 1.05rem;
  max-width: 600px;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tag {
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: rgba(47, 111, 126, 0.15);
  color: var(--accent-strong);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid rgba(47, 111, 126, 0.25);
}

body.dark-mode .tag {
  background: rgba(79, 140, 255, 0.15);
  color: #d9e5ff;
  border-color: rgba(79, 140, 255, 0.35);
}

.theme-toggle {
  white-space: nowrap;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
  display: grid;
  gap: 1.75rem;
  padding-bottom: 3.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

.card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.card h2 {
  margin: 0 0 0.35rem;
}

.muted {
  color: var(--muted);
  margin: 0;
}

.note {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0.75rem 0 0;
}

.input-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

textarea,
select {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--card-accent);
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  font-family: var(--mono);
  color: var(--ink);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

textarea:focus,
select:focus {
  outline: 2px solid rgba(47, 111, 126, 0.2);
  border-color: var(--accent);
}

body.dark-mode textarea:focus,
body.dark-mode select:focus {
  outline-color: rgba(79, 140, 255, 0.35);
  border-color: rgba(79, 140, 255, 0.6);
}

.helper {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0.6rem 0 0;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.1rem;
}

.algorithm-info {
  margin-top: 1.1rem;
  padding: 1rem 1.1rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card-accent);
  display: grid;
  gap: 0.65rem;
}

.algorithm-info__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.algorithm-info__header h3 {
  margin: 0;
  font-size: 1rem;
}

.algorithm-info__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem 1rem;
}

.algorithm-info__item {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  font-size: 0.9rem;
}

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

.algorithm-info__value {
  font-weight: 600;
}

.btn {
  border: 1px solid transparent;
  background: var(--card-accent);
  color: var(--ink);
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.12);
}

.btn.primary {
  background: var(--accent);
  color: #fff;
}

.btn.primary:hover {
  background: var(--accent-strong);
}

.btn.ghost {
  background: transparent;
  border-color: rgba(47, 111, 126, 0.35);
}

body.dark-mode .btn:hover {
  box-shadow: 0 10px 20px rgba(12, 18, 28, 0.45);
}

body.dark-mode .btn.ghost {
  border-color: rgba(79, 140, 255, 0.35);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
}

.btn:focus-visible {
  outline: 2px solid rgba(47, 111, 126, 0.35);
  outline-offset: 2px;
}

body.dark-mode .btn:focus-visible {
  outline-color: rgba(79, 140, 255, 0.6);
}

.status {
  min-height: 1.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

.status--error {
  color: var(--error);
  background: rgba(207, 74, 74, 0.12);
  border: 1px solid rgba(207, 74, 74, 0.25);
}

.status--success {
  color: var(--success);
  background: rgba(31, 143, 104, 0.12);
  border: 1px solid rgba(31, 143, 104, 0.25);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.result-item {
  display: grid;
  gap: 0.5rem;
}

.label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.code-block {
  background: var(--card-accent);
  border: 1px solid var(--border);
  padding: 0.85rem 1rem;
  border-radius: 12px;
  font-family: var(--mono);
  min-height: 3rem;
  display: flex;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: rgba(47, 111, 126, 0.12);
  font-weight: 600;
  color: var(--accent-strong);
  min-height: 2.5rem;
}

.pill.small {
  padding: 0.35rem 0.75rem;
  min-height: auto;
  font-size: 0.8rem;
}

body.dark-mode .pill {
  background: rgba(79, 140, 255, 0.15);
  color: #d9e5ff;
}

.table {
  display: grid;
  gap: 0.6rem;
}

.table__row {
  display: grid;
  grid-template-columns: 1fr 140px;
  align-items: center;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  background: var(--card-accent);
  border: 1px solid var(--border);
}

.table__row.fastest {
  border-color: rgba(31, 143, 104, 0.4);
  background: rgba(31, 143, 104, 0.12);
}

body.dark-mode .table__row.fastest {
  border-color: rgba(43, 209, 143, 0.4);
  background: rgba(43, 209, 143, 0.12);
}

.table__header {
  background: rgba(47, 111, 126, 0.12);
  font-weight: 600;
}

body.dark-mode .table__header {
  background: rgba(79, 140, 255, 0.12);
}

.table__label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.mini-tag {
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  background: rgba(31, 143, 104, 0.18);
  color: var(--success);
}

.benchmark-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1rem;
}

.warning {
  color: var(--warning);
  font-size: 0.85rem;
}

.validation-panel {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem 1.2rem;
  background: var(--card-accent);
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.validation-panel.pass {
  border-color: rgba(31, 143, 104, 0.35);
  background: rgba(31, 143, 104, 0.1);
}

.validation-panel.fail {
  border-color: rgba(207, 74, 74, 0.35);
  background: rgba(207, 74, 74, 0.1);
}

.validation-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.validation-title {
  font-weight: 600;
}

.validation-message {
  margin: 0;
  color: var(--muted);
}

.validation-block {
  display: grid;
  gap: 0.4rem;
}

.status-badge {
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.status-badge.pass {
  color: var(--success);
  background: rgba(31, 143, 104, 0.18);
}

.status-badge.fail {
  color: var(--error);
  background: rgba(207, 74, 74, 0.18);
}

.test-summary {
  padding: 0.75rem 1rem;
  border-radius: 12px;
  background: rgba(47, 111, 126, 0.12);
  border: 1px solid var(--border);
  font-weight: 600;
  margin-bottom: 0.6rem;
}

body.dark-mode .test-summary {
  background: rgba(79, 140, 255, 0.12);
}

.test-summary.pass {
  border-color: rgba(31, 143, 104, 0.35);
  background: rgba(31, 143, 104, 0.12);
}

.test-summary.fail {
  border-color: rgba(207, 74, 74, 0.35);
  background: rgba(207, 74, 74, 0.12);
}

.test-list {
  display: grid;
  gap: 0.75rem;
}

.test-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card-accent);
  font-size: 0.95rem;
}

.test-item span {
  font-family: var(--mono);
  font-size: 0.85rem;
}

.test-item.pass {
  border-color: rgba(31, 143, 104, 0.35);
  background: rgba(31, 143, 104, 0.1);
}

.test-item.fail {
  border-color: rgba(207, 74, 74, 0.35);
  background: rgba(207, 74, 74, 0.12);
}

.visual-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.visual-block {
  display: grid;
  gap: 0.7rem;
}

.bar-chart {
  height: 180px;
  background: var(--card-accent);
  border: 1px solid var(--border);
  border-radius: 12px;
  position: relative;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(4px, 1fr);
  gap: 3px;
  align-items: stretch;
  padding: 0.75rem;
  overflow: hidden;
}

.bar-chart::after {
  content: "";
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  top: 50%;
  height: 1px;
  background: rgba(47, 111, 126, 0.3);
  z-index: 2;
}

body.dark-mode .bar-chart::after {
  background: rgba(79, 140, 255, 0.3);
}

.bar-slot {
  position: relative;
  height: 100%;
  z-index: 1;
}

.bar-value {
  position: absolute;
  left: 0;
  right: 0;
  border-radius: 6px;
}

.bar-value.positive {
  bottom: 50%;
  background: linear-gradient(180deg, #3f8ea1 0%, #246574 100%);
}

body.dark-mode .bar-value.positive {
  background: linear-gradient(180deg, #5fa0ff 0%, #2b67ff 100%);
}

.bar-value.negative {
  top: 50%;
  background: linear-gradient(180deg, #f0b56b 0%, #e57e4e 100%);
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.info-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.6rem;
}

.info-list li {
  background: var(--card-accent);
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.footer {
  padding: 2.5rem 1.5rem 3rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.reveal {
  animation: fade-up 0.6s ease both;
  animation-delay: var(--delay, 0s);
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .card__header {
    flex-direction: column;
  }

  .input-grid,
  .split,
  .visual-grid {
    grid-template-columns: 1fr;
  }

  .table__row {
    grid-template-columns: 1fr 110px;
  }
}

@media (max-width: 700px) {
  .hero__top {
    flex-direction: column;
    align-items: flex-start;
  }

  .algorithm-info__grid {
    grid-template-columns: 1fr;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }

  .button-row {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}