/* ─── YUANEXT CLAYMORHPISM DESIGN SYSTEM ───────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500;600;700&family=Nunito:wght@700;800;900&display=swap');

:root {
  --bg-app: #EEF0FA;
  --bg-card: #FFFFFF;
  --bg-card-subtle: #F6F8FD;
  --bg-card-elevated: #FFFFFF;

  --border-clay: 3px solid #C8CEEE;
  --border-hairline: 1px solid rgba(200, 206, 238, 0.8);
  --border-radius-card: 20px;
  --border-radius-btn: 12px;
  --border-radius-pill: 9999px;

  --text-main: #1E2040;
  --text-muted: #6B7090;
  --text-subtle: #9DA3C4;
  --text-accent: #3D4280;

  --accent-primary: #3D4280;
  --accent-light: #C8CEEE;
  --accent-hover: #A8B0E0;

  --color-success: #10B981;
  --color-success-bg: #E6FBF2;
  --color-error: #EF4444;
  --color-error-bg: #FEECEC;
  --color-warning: #F59E0B;
  --color-warning-bg: #FEF8E7;

  --shadow-clay: 0 8px 32px rgba(108, 114, 174, 0.15), inset -2px -2px 8px rgba(200, 206, 238, 0.35);
  --shadow-clay-sm: 0 4px 16px rgba(108, 114, 174, 0.12), inset -1px -1px 4px rgba(200, 206, 238, 0.3);
  --shadow-clay-btn: 0 4px 14px rgba(108, 114, 174, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  --shadow-inset-input: inset 2px 2px 6px rgba(108, 114, 174, 0.12), inset -1px -1px 4px rgba(255, 255, 255, 0.8);

  --font-heading: 'Nunito', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  font-weight: 800;
  letter-spacing: -0.02em;
}

code, pre, .font-mono {
  font-family: var(--font-mono);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: all 180ms ease;
}

/* ─── CLAY CONTAINER & CARDS ────────────────────────────────────────────── */
.clay-card {
  background: var(--bg-card);
  border: var(--border-clay);
  border-radius: var(--border-radius-card);
  box-shadow: var(--shadow-clay);
  padding: 24px;
  position: relative;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.clay-card-sm {
  background: var(--bg-card);
  border: var(--border-clay);
  border-radius: 14px;
  box-shadow: var(--shadow-clay-sm);
  padding: 16px;
}

.clay-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(108, 114, 174, 0.2), inset -2px -2px 8px rgba(200, 206, 238, 0.4);
}

/* ─── CLAY BUTTONS ──────────────────────────────────────────────────────── */
.clay-btn {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: var(--border-radius-btn);
  border: var(--border-clay);
  background: var(--bg-card);
  color: var(--text-main);
  box-shadow: var(--shadow-clay-btn);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 150ms ease, background 150ms ease, box-shadow 150ms ease;
  user-select: none;
}

.clay-btn:hover {
  background: var(--bg-card-subtle);
  transform: translateY(-1px);
}

.clay-btn:active {
  transform: scale(0.97);
  box-shadow: inset 1px 1px 4px rgba(108, 114, 174, 0.2);
}

.clay-btn-primary {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #FFFFFF;
}

.clay-btn-primary:hover {
  background: #2D3160;
  border-color: #2D3160;
}

.clay-btn-accent {
  background: var(--accent-light);
  border-color: #A8B0E0;
  color: var(--text-accent);
}

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

/* ─── CLAY INPUT & FORMS ────────────────────────────────────────────────── */
.clay-input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-main);
  background: #FFFFFF;
  border: var(--border-clay);
  border-radius: var(--border-radius-btn);
  padding: 12px 16px;
  box-shadow: var(--shadow-inset-input);
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.clay-input:focus {
  border-color: var(--accent-primary);
  box-shadow: inset 2px 2px 6px rgba(61, 66, 128, 0.15), 0 0 0 3px rgba(200, 206, 238, 0.5);
}

.clay-input::placeholder {
  color: var(--text-subtle);
}

/* ─── CLAY PILLS & BADGES ───────────────────────────────────────────────── */
.clay-pill {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--border-radius-pill);
  border: 2px solid #C8CEEE;
  background: #FFFFFF;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.clay-pill-success {
  background: var(--color-success-bg);
  border-color: rgba(16, 185, 129, 0.4);
  color: #065F46;
}

.clay-pill-warning {
  background: var(--color-warning-bg);
  border-color: rgba(245, 158, 11, 0.4);
  color: #92400E;
}

.clay-pill-error {
  background: var(--color-error-bg);
  border-color: rgba(239, 68, 68, 0.4);
  color: #991B1B;
}

/* ─── TOPBAR & SHELL ────────────────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(238, 240, 250, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: var(--border-clay);
  padding: 14px 24px;
}

.topbar-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 20px;
  color: var(--text-main);
  text-decoration: none;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-primary);
  border: 2px solid var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(61, 66, 128, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 14px;
  color: var(--text-muted);
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ─── FOOTER ────────────────────────────────────────────────────────────── */
.site-footer {
  margin-top: auto;
  border-top: var(--border-clay);
  background: #FFFFFF;
  padding: 40px 24px 24px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(200, 206, 238, 0.6);
  padding-top: 18px;
  font-size: 13px;
  color: var(--text-subtle);
}

/* ─── UTILITIES ─────────────────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}