/* styles.css */
@import 'tokens.css';

/* CSS Reset and Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
}

body, h1, h2, h3, h4, p, figure, blockquote, dl, dd {
  margin: 0;
}

ul[role='list'], ol[role='list'] {
  list-style: none;
}

html:focus-within {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  text-rendering: optimizeSpeed;
  line-height: 1.6;
  font-family: var(--font-body);
  color: var(--c-deep-desert-night);
  background-color: var(--c-marble-white);
  -webkit-font-smoothing: antialiased;
}

a:not([class]) {
  text-decoration-skip-ink: auto;
}

img, picture {
  max-width: 100%;
  display: block;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-s);
  color: var(--c-deep-desert-night);
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.75rem); }

p {
  margin-bottom: var(--space-m);
}

a {
  color: var(--c-gold-reserve);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color 0.2s ease, color 0.2s ease;
}

a:hover {
  text-decoration-color: var(--c-gold-reserve);
  color: var(--c-deep-desert-night);
}

/* Layout Utilities */
.container {
  max-width: var(--content-max-width);
  margin-inline: auto;
  padding-inline: var(--space-m);
}

.container-narrow {
  max-width: var(--content-narrow-width);
  margin-inline: auto;
  padding-inline: var(--space-m);
}

.flow > * + * {
  margin-block-start: var(--flow-space, 1em);
}

.grid-auto-fit {
  display: grid;
  gap: var(--space-l);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
}

/* Header & Nav */
.site-header {
  border-bottom: 1px solid var(--c-slate);
  background: var(--c-surface-1);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
}

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: var(--space-s);
}

.site-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-deep-desert-night);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-nav-links {
  display: flex;
  gap: var(--space-m);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav-links a {
  text-decoration: none;
  color: var(--c-slate);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.site-nav-links a:hover,
.site-nav-links a[aria-current="page"] {
  color: var(--c-gold-reserve);
}

/* Footer */
.site-footer {
  background: var(--c-deep-desert-night);
  color: var(--c-marble-white);
  padding-block: var(--space-3xl);
  margin-top: var(--space-5xl);
}

.site-footer a {
  color: var(--c-marble-white);
  opacity: 0.8;
}

.site-footer a:hover {
  opacity: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* Interactive Tools */
.tool-container {
  background: var(--c-surface-1);
  border: 1px solid var(--c-slate);
  padding: var(--space-l);
  margin-block: var(--space-xl);
}

.tool-input-group {
  margin-bottom: var(--space-m);
}

.tool-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-3xs);
}

.tool-input {
  width: 100%;
  padding: var(--space-s);
  border: 1px solid var(--c-slate);
  background: var(--c-marble-white);
}

.tool-button {
  background: var(--c-deep-desert-night);
  color: var(--c-marble-white);
  border: none;
  padding: var(--space-s) var(--space-m);
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tool-button:hover {
  background: var(--c-gold-reserve);
}

.tool-result {
  margin-top: var(--space-l);
  padding: var(--space-m);
  background: var(--c-surface-2);
  border-left: 4px solid var(--c-gold-reserve);
  font-size: 1.25rem;
  font-family: var(--font-display);
}

.tool-no-js {
  padding: var(--space-m);
  background: var(--c-crimson);
  color: var(--c-surface-1);
  margin-bottom: var(--space-m);
}