:root {
  /* Colors */
  --color-bg-primary: #252525;
  --color-bg-secondary: #2f2f2f;
  --color-surface: #2f2f2f;
  --color-text-primary: #fafafa;
  --color-text-muted: #cecece;
  --color-accent: #beff00;
  --color-brand: #0f22d3;
  --color-warning: #f1831c;
  --color-surface-light: #fafafa;
  --color-text-dark: #252525;
  --color-text-dark-muted: #5e5e5e;

  /* Typography */
  --font-heading: "Smooch Sans", "Arial Narrow", Arial, sans-serif;
  --font-text: "SF Pro Text", "SF Pro Display", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Radius / borders */
  --radius-none: 0px;
  --border-default: 1px solid #cecece55;
  --border-strong: 1px solid var(--color-text-muted);

  /* Spacing scale */
  --space-2: 0.125rem;
  --space-4: 0.25rem;
  --space-8: 0.5rem;
  --space-12: 0.75rem;
  --space-16: 1rem;
  --space-20: 1.25rem;
  --space-24: 1.5rem;
  --space-32: 2rem;

  /* Shadows */
  --shadow-card: 0 10px 24px rgba(0, 0, 0, 0.28);

  /* Layout */
  --container-max: 1200px;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-text);
  line-height: 1.45;
}

.container {
  width: min(100% - 2rem, var(--container-max));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-24);
}

.section + .section {
  border-top: var(--border-default);
}

.section-title {
  margin: 0 0 var(--space-16);
  font-family: var(--font-heading);
  font-size: clamp(2rem, 6vw, 2.8rem);
  letter-spacing: 0.01em;
}

.subtle {
  color: var(--color-text-muted);
}

/* Typography */
h1,
h2,
h3,
h4 {
  margin: 0 0 var(--space-8);
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.25rem, 8vw, 4rem);
}
h2 {
  font-size: clamp(1.8rem, 6vw, 3rem);
}
h3 {
  font-size: clamp(1.4rem, 5vw, 2.2rem);
}
h4 {
  font-size: clamp(1.2rem, 4vw, 1.8rem);
}

p {
  margin: 0 0 var(--space-8);
  font-size: 1rem;
}

.caption {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Grids */
.grid {
  display: grid;
  gap: var(--space-16);
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

/* Color palette */
.color-card {
  border: var(--border-default);
  background: var(--color-surface);
}

.swatch {
  height: 96px;
}

.swatch-meta {
  padding: var(--space-12);
}

.swatch-name {
  margin: 0;
  font-weight: 600;
}

.swatch-code {
  margin: var(--space-4) 0 0;
  color: var(--color-text-muted);
}

/* Buttons */
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
}

.btn {
  --btn-bg: var(--color-accent);
  --btn-color: #1f1f1f;
  --btn-border: transparent;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-none);
  background: var(--btn-bg);
  color: var(--btn-color);
  font-family: var(--font-heading);
  font-size: 1.8rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: filter 0.2s ease, transform 0.15s ease;
}

.btn:hover {
  filter: brightness(1.06);
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: 2px solid var(--color-warning);
  outline-offset: 2px;
}

.btn-sm {
  min-height: 2.5rem;
  padding: 0 var(--space-16);
  font-size: 1.4rem;
}

.btn-md {
  min-height: 3rem;
  padding: 0 var(--space-20);
}

.btn-lg {
  min-height: 3.5rem;
  padding: 0 var(--space-24);
  font-size: 2rem;
}

.btn-primary {
  --btn-bg: var(--color-accent);
  --btn-color: #1f1f1f;
}

.btn-secondary {
  --btn-bg: var(--color-brand);
  --btn-color: var(--color-text-primary);
}

.btn-outline {
  --btn-bg: transparent;
  --btn-color: var(--color-text-primary);
  --btn-border: var(--color-text-muted);
}

/* Forms */
.form-grid {
  display: grid;
  gap: var(--space-16);
}

.form-field {
  display: grid;
  gap: var(--space-8);
}

.label {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.input,
.select,
.textarea {
  width: 100%;
  min-height: 3rem;
  border: none;
  border-bottom: 1px solid var(--color-text-muted);
  border-radius: var(--radius-none);
  background: transparent;
  color: var(--color-text-primary);
  font-size: 1rem;
  font-family: var(--font-text);
  padding: var(--space-8) 0;
}

.textarea {
  min-height: 6rem;
  resize: vertical;
}

.input::placeholder,
.textarea::placeholder {
  color: #cecece99;
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-bottom-color: var(--color-accent);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.checkbox {
  appearance: none;
  width: 1.15rem;
  height: 1.15rem;
  border: 1px solid var(--color-text-muted);
  background: transparent;
  margin: 0;
  cursor: pointer;
  position: relative;
}

.checkbox:checked {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.checkbox:checked::after {
  content: "";
  position: absolute;
  left: 0.32rem;
  top: 0.12rem;
  width: 0.28rem;
  height: 0.58rem;
  border: solid #111;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* Cards */
.card {
  background: linear-gradient(90deg, var(--color-bg-secondary), #252525);
  border: var(--border-default);
  padding: var(--space-16);
  box-shadow: var(--shadow-card);
}

.card h4 {
  margin-bottom: var(--space-4);
}

.card .meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-16);
  margin-top: var(--space-16);
}

.kpi {
  font-family: var(--font-heading);
  color: var(--color-accent);
  font-size: clamp(2rem, 6vw, 3rem);
}

/* Badges */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  min-height: 2rem;
  padding: 0 var(--space-12);
  border: var(--border-default);
  font-size: 0.875rem;
  color: var(--color-text-primary);
  background: transparent;
}

.badge-success {
  border-color: #beff00aa;
}

.badge-warning {
  border-color: #f1831ccc;
  color: #ffd1aa;
}

.badge-muted {
  color: var(--color-text-muted);
}

/* Icons */
.icon-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-12);
}

.icon-card {
  display: grid;
  place-items: center;
  min-height: 4.5rem;
  border: var(--border-default);
  background: var(--color-bg-secondary);
}

.icon {
  width: 1.5rem;
  height: 1.5rem;
  fill: currentColor;
}

.icon-accent {
  color: var(--color-accent);
}

.icon-muted {
  color: var(--color-text-muted);
}

/* Header showcase */
.hero {
  background: radial-gradient(circle at 20% 10%, #2440ff 0%, #0f22d3 35%, #09115e 100%);
  padding-block: clamp(2rem, 10vw, 5rem);
}

.hero h1 {
  max-width: 12ch;
}

.hero p {
  max-width: 44ch;
}

/* Light surface blocks for website sections */
.surface-light {
  background: var(--color-surface-light);
  color: var(--color-text-dark);
  border: 1px solid #25252522;
  padding: var(--space-16);
}

.surface-light .section-title,
.surface-light h1,
.surface-light h2,
.surface-light h3,
.surface-light h4,
.surface-light .swatch-name,
.surface-light .kpi {
  color: var(--color-text-dark);
}

.surface-light .subtle,
.surface-light .caption,
.surface-light .label {
  color: var(--color-text-dark-muted);
}

.surface-light .input,
.surface-light .select,
.surface-light .textarea {
  color: var(--color-text-dark);
  border-bottom-color: #25252566;
}

.surface-light .btn-outline {
  --btn-color: var(--color-text-dark);
  --btn-border: #25252599;
}

.card-light {
  background: #ffffff;
  border: 1px solid #25252533;
  color: var(--color-text-dark);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.1);
}

/* Desktop enhancements */
@media (min-width: 768px) {
  .section {
    padding-block: var(--space-32);
  }

  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-field.full {
    grid-column: 1 / -1;
  }
}