/* ============================================================
   BASE STYLESHEET
   ============================================================ */

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.15;
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 68ch;
}

::selection {
  background: color-mix(in srgb, var(--color-accent) 25%, transparent);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button { cursor: pointer; background: none; border: none; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

.container--narrow {
  max-width: var(--content-default);
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

.section--sm {
  padding-block: clamp(var(--space-10), 5vw, var(--space-20));
}

/* ============================================================
   HEADER & NAV
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 90%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-slow);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo__wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.site-logo__name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.site-logo__sub {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  padding-block: var(--space-1);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary);
  color: var(--color-text-inverse) !important;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  border: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  border-bottom: none !important;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  border-radius: 2px;
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
  }

  .nav-links.open { display: flex; }

  .nav-links li { width: 100%; }

  .nav-links a {
    display: block;
    padding: var(--space-3) var(--space-4);
    border-bottom: none;
    border-radius: var(--radius-md);
  }

  .nav-links a:hover { background: var(--color-surface-offset); }

  .nav-cta { margin-top: var(--space-2); text-align: center; justify-content: center; }
  .nav-cta:hover { transform: none; }
  .site-nav { position: relative; }
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.footer-brand {}

.footer-logo-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-2);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: color-mix(in srgb, #fff 65%, transparent);
  line-height: 1.6;
  max-width: 28ch;
}

.footer-nav-title,
.footer-contact-title {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: color-mix(in srgb, #fff 55%, transparent);
  margin-bottom: var(--space-4);
}

.footer-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-nav-links a {
  font-size: var(--text-sm);
  color: color-mix(in srgb, #fff 75%, transparent);
  transition: color var(--transition-fast);
}

.footer-nav-links a:hover { color: #fff; }

.footer-contact p {
  font-size: var(--text-sm);
  color: color-mix(in srgb, #fff 75%, transparent);
  margin-bottom: var(--space-3);
  max-width: none;
}

.footer-contact a {
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

.footer-contact a:hover { color: var(--color-accent-hover); }

.footer-bottom {
  margin-top: clamp(var(--space-10), 4vw, var(--space-16));
  padding-top: var(--space-6);
  border-top: 1px solid color-mix(in srgb, #fff 15%, transparent);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: color-mix(in srgb, #fff 45%, transparent);
  max-width: none;
}

.footer-linkedin {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: color-mix(in srgb, #fff 60%, transparent);
  transition: color var(--transition-fast);
}

.footer-linkedin:hover { color: #fff; }

@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr; gap: var(--space-10); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  border: 2px solid transparent;
  text-decoration: none;
}

.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

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

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover { background: var(--color-primary); color: var(--color-text-inverse); }

.btn--ghost {
  background: transparent;
  color: var(--color-text-inverse);
  border-color: color-mix(in srgb, #fff 40%, transparent);
}
.btn--ghost:hover { background: color-mix(in srgb, #fff 10%, transparent); border-color: #fff; }

/* ============================================================
   SHARED COMPONENTS
   ============================================================ */

/* Page hero (non-home pages) */
.page-hero {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: color-mix(in srgb, var(--color-accent) 30%, transparent);
}

.page-hero__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.page-hero__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
  margin-bottom: var(--space-6);
  max-width: 16ch;
}

.page-hero__subtitle {
  font-size: var(--text-lg);
  color: color-mix(in srgb, #fff 75%, transparent);
  max-width: 52ch;
  line-height: 1.6;
  font-family: var(--font-body);
  font-weight: 400;
}

/* Accent line */
.accent-line {
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  margin-bottom: var(--space-6);
}

/* Section label */
.section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border-width: 0;
}