/* ═══════════════════════════════════════════════════════════
   SwingDesk Design System
   Bloomberg + Apple + Stripe minimalism
   ═══════════════════════════════════════════════════════════ */

/* ── Reset ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ── CSS Variables ── */
:root {
  /* Base palette */
  --white: #ffffff;
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fb;
  --bg-tertiary: #f1f3f5;
  --bg-card: #ffffff;
  --bg-card-hover: #fafbfc;
  --bg-input: #f8f9fb;
  --bg-dark: #0f1119;

  /* Text */
  --text-primary: #0f1119;
  --text-secondary: #5c6370;
  --text-tertiary: #8b919e;
  --text-muted: #adb3be;
  --text-on-dark: #ffffff;

  /* Borders */
  --border-primary: #e5e7eb;
  --border-secondary: #eef0f2;
  --border-hover: #d1d5db;

  /* Accents */
  --green: #10b981;
  --green-light: #d1fae5;
  --green-bg: rgba(16, 185, 129, 0.08);
  --amber: #f59e0b;
  --amber-light: #fef3c7;
  --amber-bg: rgba(245, 158, 11, 0.08);
  --red: #ef4444;
  --red-light: #fee2e2;
  --red-bg: rgba(239, 68, 68, 0.08);
  --blue: #3b82f6;
  --blue-light: #dbeafe;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-card-hover: 0 8px 25px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.03);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max: 1120px;
  --container-narrow: 760px;
  --nav-height: 64px;
}

/* ── Base ── */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ── Layout ── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Global Navigation ── */
.sd-nav {
  height: var(--nav-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-secondary);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.sd-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.sd-nav-logo {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 3px;
}

.sd-nav-logo span {
  color: var(--green);
}

.sd-nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.sd-nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  transition: color 0.15s ease, background 0.15s ease;
}

.sd-nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.sd-nav-link.active {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.sd-nav-cta {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-on-dark);
  background: var(--text-primary);
  text-decoration: none;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  transition: opacity 0.15s ease, transform 0.1s ease;
}

.sd-nav-cta:hover {
  opacity: 0.85;
}

.sd-nav-cta:active {
  transform: scale(0.98);
}

/* ── Cards ── */
.sd-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), border-color 0.2s ease;
  box-shadow: var(--shadow-card);
}

.sd-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-hover);
}

.sd-card-static {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

/* ── Badges ── */
.sd-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.sd-badge-green {
  color: var(--green);
  background: var(--green-bg);
}

.sd-badge-amber {
  color: var(--amber);
  background: var(--amber-bg);
}

.sd-badge-red {
  color: var(--red);
  background: var(--red-bg);
}

.sd-badge-neutral {
  color: var(--text-tertiary);
  background: var(--bg-tertiary);
}

/* ── Buttons ── */
.sd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  line-height: 1.4;
}

.sd-btn:active {
  transform: scale(0.98);
}

.sd-btn-primary {
  background: var(--text-primary);
  color: var(--text-on-dark);
}

.sd-btn-primary:hover {
  opacity: 0.85;
}

.sd-btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
}

.sd-btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-hover);
}

.sd-btn-green {
  background: var(--green);
  color: var(--white);
}

.sd-btn-green:hover {
  opacity: 0.9;
}

.sd-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── Toggle Switch ── */
.sd-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.sd-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.sd-toggle .slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--border-primary);
  border-radius: 24px;
  transition: all 0.25s var(--ease-out);
}

.sd-toggle .slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background: var(--white);
  border-radius: 50%;
  transition: all 0.25s var(--ease-out);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.sd-toggle input:checked + .slider {
  background: var(--green);
}

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

.sd-toggle:hover .slider {
  background: var(--border-hover);
}

.sd-toggle input:checked:hover + .slider {
  background: #059669;
}

/* ── Form Inputs ── */
.sd-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.sd-input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-bg);
}

.sd-input::placeholder {
  color: var(--text-muted);
}

/* ── Typography ── */
.sd-heading-xl {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -1.5px;
  color: var(--text-primary);
}

.sd-heading-lg {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -1px;
  color: var(--text-primary);
}

.sd-heading-md {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.3px;
  color: var(--text-primary);
}

.sd-heading-sm {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}

.sd-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-tertiary);
}

.sd-body {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.sd-caption {
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.5;
}

/* ── Color Utilities ── */
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-amber { color: var(--amber); }
.text-blue { color: var(--blue); }
.text-muted { color: var(--text-tertiary); }

.bg-green-light { background: var(--green-light); }
.bg-red-light { background: var(--red-light); }
.bg-amber-light { background: var(--amber-light); }

/* ── Metric Pill ── */
.sd-metric {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}

.sd-metric-label {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-tertiary);
  margin-bottom: 4px;
}

.sd-metric-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.2px;
}

/* ── Score Bar ── */
.sd-score-bar {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sd-score-track {
  flex: 1;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  height: 6px;
  overflow: hidden;
}

.sd-score-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--green);
  transition: width 0.6s var(--ease-out);
}

.sd-score-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--green);
  min-width: 55px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ── Toast ── */
.sd-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s var(--ease-out);
  z-index: 200;
  box-shadow: var(--shadow-lg);
  max-width: 380px;
}

.sd-toast.show {
  transform: translateY(0);
  opacity: 1;
}

.sd-toast.success {
  border-left: 3px solid var(--green);
}

.sd-toast.error {
  border-left: 3px solid var(--red);
}

/* ── Loading Spinner ── */
.sd-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-primary);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: sd-spin 0.7s linear infinite;
}

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

/* ── Footer ── */
.sd-footer {
  padding: 32px 0;
  border-top: 1px solid var(--border-secondary);
  text-align: center;
}

.sd-footer p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .sd-nav-links {
    gap: 2px;
  }

  .sd-nav-link {
    padding: 6px 10px;
    font-size: 13px;
  }

  .sd-nav-cta {
    padding: 7px 14px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .sd-nav-links .sd-nav-link {
    display: none;
  }

  .sd-nav-links .sd-nav-link.mobile-show {
    display: flex;
  }
}