:root {
  --bg: #07111f;
  --panel: rgba(10, 21, 38, 0.82);
  --panel-2: rgba(16, 29, 49, 0.9);
  --line: rgba(148, 163, 184, 0.18);
  --text: #e5eefc;
  --muted: #93a4c4;
  --primary: #6ea8fe;
  --primary-2: #8b5cf6;
  --success: #34d399;
  --warning: #f59e0b;
  --danger: #fb7185;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(110, 168, 254, 0.22), transparent 30%),
    radial-gradient(circle at top right, rgba(139, 92, 246, 0.18), transparent 28%),
    linear-gradient(180deg, #07111f 0%, #081426 45%, #09182f 100%);
  color: var(--text);
}

body {
  padding: 24px;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, textarea, select {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

.container {
  max-width: 1440px;
  margin: 0 auto;
}

.topbar {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  gap: 16px;
  align-items: center;
}

.logo {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 22px;
  box-shadow: var(--shadow);
}

.brand-copy h1 {
  margin: 0;
  font-size: 28px;
}

.brand-copy p {
  margin: 6px 0 0;
  color: var(--muted);
}

.controls {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.search,
.select,
.text-input,
.text-area,
.file-input,
.number-input {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(5, 12, 25, 0.72);
  color: var(--text);
  border-radius: 14px;
  padding: 14px 16px;
  outline: none;
}

.search {
  min-width: 280px;
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 24px;
  margin-bottom: 24px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-main,
.hero-side,
.panel {
  padding: 24px;
}

.hero-main h2 {
  margin: 0;
  font-size: 48px;
  line-height: 1.05;
}

.hero-main p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.badge {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(110, 168, 254, 0.12);
  border: 1px solid rgba(110, 168, 254, 0.25);
  color: #c9dcff;
  font-size: 13px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 18px;
}

.stat {
  padding: 16px;
  border-radius: 18px;
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.stat strong {
  display: block;
  font-size: 28px;
}

.stat span {
  color: var(--muted);
  font-size: 13px;
}

.categories {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.chip {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid var(--line);
  color: var(--muted);
}

.chip.active {
  background: linear-gradient(135deg, rgba(110, 168, 254, 0.2), rgba(139, 92, 246, 0.25));
  color: var(--text);
  border-color: rgba(110, 168, 254, 0.4);
}

.layout {
  display: grid;
  grid-template-columns: 0.92fr 1.4fr;
  gap: 24px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.tool-card {
  padding: 18px;
  border-radius: 18px;
  background: rgba(8, 17, 32, 0.78);
  border: 1px solid var(--line);
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.tool-card:hover,
.tool-card.active {
  transform: translateY(-2px);
  border-color: rgba(110, 168, 254, 0.36);
  background: rgba(13, 24, 45, 0.92);
}

.tool-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.tool-card p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.tool-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--muted);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.panel-header h3 {
  margin: 0;
  font-size: 28px;
}

.panel-header p {
  margin: 8px 0 0;
  color: var(--muted);
}

.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.primary-btn,
.secondary-btn,
.ghost-btn {
  padding: 12px 16px;
  border-radius: 14px;
  font-weight: 600;
}

.primary-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: white;
}

.secondary-btn {
  background: rgba(52, 211, 153, 0.14);
  border: 1px solid rgba(52, 211, 153, 0.25);
  color: #c8fae8;
}

.secondary-btn.active {
  background: rgba(110, 168, 254, 0.25);
  border-color: rgba(110, 168, 254, 0.5);
  color: var(--text);
}

.ghost-btn {
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid var(--line);
  color: var(--text);
}

.tool-body {
  display: grid;
  gap: 16px;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.result-box,
.preview-box,
.output-box {
  min-height: 120px;
  padding: 16px;
  border-radius: 16px;
  background: rgba(5, 12, 25, 0.7);
  border: 1px solid var(--line);
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  padding: 4px 8px;
  border-radius: 8px;
  background: rgba(148, 163, 184, 0.12);
  border: 1px solid var(--line);
  font-size: 12px;
}

.footer {
  margin-top: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.hidden {
  display: none !important;
}

.color-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.color-swatch {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #ffffff;
}

@media (max-width: 1180px) {
  .hero,
  .layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  body {
    padding: 16px;
  }

  .tools-grid,
  .two-col,
  .stats {
    grid-template-columns: 1fr;
  }

  .hero-main h2 {
    font-size: 34px;
  }

  .search {
    min-width: 0;
  }
}