/* William Tanna — shared design system (warm neutrals) */

:root {
  --bg: #f6f1e8;
  --bg-soft: #ebe4d8;
  --bg-elevated: #ffffff;
  --text: #2a2218;
  --muted: #7a6e60;
  --accent: #6b5344;
  --accent-bright: #8b6b52;
  --accent-2: #4a3728;
  --accent-2-hover: #5c4634;
  --border: rgba(74, 55, 40, 0.16);
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 18px 40px rgba(42, 34, 24, 0.1);
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --nav-h: 72px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);

  /* Back-compat aliases for pages still using old tokens */
  --black: var(--bg);
  --black-soft: var(--bg-soft);
  --black-card: var(--bg-elevated);
  --gold: var(--accent);
  --gold-light: var(--accent-bright);
  --gold-dark: var(--accent-2);
  --text-muted: var(--muted);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  line-height: 1.7;
  color: var(--text);
  background:
    radial-gradient(ellipse 70% 45% at 0% 0%, rgba(139, 107, 82, 0.12), transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 10%, rgba(74, 55, 40, 0.08), transparent 50%),
    radial-gradient(ellipse 60% 35% at 50% 100%, rgba(235, 228, 216, 0.9), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  overflow-x: hidden;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

a:hover {
  color: var(--accent-bright);
}

/* —— Typography —— */
.site-brand,
.display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.75rem;
}

.section-subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 36rem;
  margin: 0 0 2rem;
}

/* —— Layout —— */
.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.section {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.75rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent-2);
  color: #faf7f2;
  border-color: var(--accent-2);
  box-shadow: 0 8px 22px rgba(74, 55, 40, 0.22);
}

.btn-primary:hover {
  background: var(--accent-2-hover);
  color: #faf7f2;
  border-color: var(--accent-2-hover);
}

.btn-secondary,
.btn-ghost {
  background: var(--bg-elevated);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover,
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  background: var(--bg-soft);
}

.btn-ai {
  background: transparent;
  color: var(--accent-2);
  border-color: rgba(74, 55, 40, 0.35);
}

.btn-ai:hover {
  background: rgba(74, 55, 40, 0.08);
  color: var(--accent-2);
}

/* —— Site nav —— */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  padding: 0 clamp(1rem, 4vw, 2rem);
  background: rgba(246, 241, 232, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-nav.is-scrolled {
  border-bottom-color: var(--border);
  background: rgba(255, 255, 255, 0.94);
}

.site-nav-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
}

.site-brand span {
  color: var(--accent);
}

.site-nav-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.3s var(--ease), border-color 0.2s;
}

.site-nav-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.site-nav-toggle[aria-expanded="true"] {
  transform: rotate(45deg);
  background: var(--accent-2);
  color: #faf7f2;
  border-color: var(--accent-2);
}

.site-nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav-links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

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

@media (min-width: 900px) {
  .site-nav-toggle {
    display: none;
  }

  .site-nav-links {
    display: flex;
    align-items: center;
    gap: 1.75rem;
  }
}

@media (max-width: 899px) {
  .site-nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    right: 0;
    bottom: 0;
    width: min(300px, 88vw);
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: 1.5rem;
    background: var(--bg-elevated);
    border-left: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

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

  .site-nav-links a {
    display: block;
    width: 100%;
    padding: 0.85rem 0.5rem;
    min-height: 44px;
  }
}

.site-nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 999;
}

.site-nav-backdrop.is-open {
  display: block;
}

/* —— Footer —— */
.site-footer {
  padding: 3rem 1.5rem 2.5rem;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.7);
}

.site-footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.site-footer .social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.site-footer .social-links a {
  color: var(--muted);
  font-weight: 500;
}

.site-footer .social-links a:hover {
  color: var(--accent);
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* —— Page transition —— */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  background: transparent;
}

.page-transition.active {
  opacity: 1;
  pointer-events: all;
}

.transition-wipe {
  position: absolute;
  inset: 0;
  background: var(--bg);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.55s cubic-bezier(0.76, 0, 0.24, 1);
}

.page-transition.active .transition-wipe {
  transform: scaleY(1);
  transform-origin: top;
}

.transition-content {
  position: relative;
  z-index: 1;
  text-align: center;
  opacity: 0;
  transform: translateY(12px) scale(0.96);
  transition: opacity 0.35s ease 0.18s, transform 0.45s cubic-bezier(0.22, 1, 0.36, 1) 0.18s;
}

.page-transition.active .transition-content {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.transition-mark {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 3.5rem);
  font-weight: 800;
  color: var(--accent-2);
  letter-spacing: -0.04em;
  animation: none;
}

.page-transition.active .transition-mark {
  animation: markPulse 0.7s ease 0.25s both;
}

@keyframes markPulse {
  0% { letter-spacing: -0.08em; opacity: 0.4; }
  100% { letter-spacing: -0.04em; opacity: 1; }
}

.loading-text {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
}

/* legacy tiger class still used on some pages */
.tiger-runner {
  font-size: 2.5rem;
  color: var(--accent);
}

/* —— Motion —— */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-delay-1 { transition-delay: 0.08s; }
.animate-delay-2 { transition-delay: 0.16s; }
.animate-delay-3 { transition-delay: 0.24s; }
.animate-delay-4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn:hover { transform: none; }
  .page-transition { transition: none; }
}

/* —— Surfaces —— */
.surface {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.surface-hover:hover {
  border-color: rgba(74, 55, 40, 0.35);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

/* —— Floating chat shell —— */
.chat-fab {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 900;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: none;
  background: var(--accent-2);
  color: #faf7f2;
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(74, 55, 40, 0.28);
  transition: transform 0.25s var(--ease), background 0.2s;
}

.chat-fab:hover {
  transform: scale(1.07);
  background: var(--accent-2-hover);
}

.chat-fab[aria-expanded="true"] {
  transform: rotate(8deg) scale(0.95);
}

.chat-panel {
  position: fixed;
  right: 1.25rem;
  bottom: 5.25rem;
  z-index: 900;
  width: min(320px, calc(100vw - 2rem));
  max-height: min(62vh, 460px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(16px) scale(0.94);
  transform-origin: bottom right;
  transition:
    opacity 0.28s var(--ease),
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0.28s;
}

.chat-panel.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

@media (max-width: 480px) {
  .chat-panel {
    left: 0.75rem;
    right: 0.75rem;
    width: auto;
    bottom: 5rem;
    transform-origin: bottom center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-transition.active .transition-wipe,
  .page-transition.active .transition-content,
  .page-transition.active .transition-mark,
  .chat-panel {
    transition: none;
    animation: none;
  }
  .chat-panel {
    transform: none;
  }
  .chat-panel.is-open {
    transform: none;
  }
}