/* Base Styles & Reset: Clean (Light) & Dark Luxury (Dark) */

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

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
}

html[data-theme="light"] {
  color-scheme: light;
}

body {
  background-color: var(--bg);
  color: var(--body);
  font-family: var(--font-body);
  font-size: var(--font-body-size);
  line-height: var(--body-line-height);
  min-height: 100svh;
  overflow-x: clip;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* Subtle Film Grain Texture Overlay (Luxury editorial tactile feel) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-size: 128px;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Background Canvas */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  display: block;
}

/* Main Content Layer */
.app-container {
  position: relative;
  z-index: 10;
  width: 100%;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  letter-spacing: var(--heading-spacing);
  font-weight: 700;
  color: var(--text);
  line-height: 1.15;
}

h1 { font-size: var(--font-h1); }
h2 { font-size: var(--font-h2); }
h3 { font-size: var(--font-h3); }

p {
  color: var(--body);
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

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

/* Focus Visible */
:focus {
  outline: none;
}

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

/* Buttons */
button {
  font-family: inherit;
  font-size: var(--font-small);
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

button:active, .btn-primary:active, .btn-secondary:active {
  transform: scale(0.98);
}

/* Primary Button */
.btn-primary {
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  font-weight: 600;
  border: 1px solid var(--btn-primary-border);
  box-shadow: var(--btn-primary-glow);
  border-radius: var(--radius-sm);
}

.btn-primary:hover {
  border-color: var(--accent-hover);
  color: var(--btn-primary-text);
  transform: translateY(-1px);
}

[data-theme="dark"] .btn-primary:hover {
  box-shadow: 0 0 28px rgba(212, 160, 60, 0.32);
}

[data-theme="light"] .btn-primary:hover {
  background-color: #24221e;
  box-shadow: 0 4px 16px rgba(15, 14, 12, 0.16);
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.btn-secondary:hover {
  background-color: var(--surface-hover);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

/* Outline Button */
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
}

.section {
  min-height: calc(100svh - var(--header-height));
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--border);
  position: relative;
  scroll-margin-top: var(--header-height);
  box-sizing: border-box;
}

.section-header {
  margin-bottom: var(--space-12);
}

.section-label {
  font-family: var(--font-heading);
  font-size: var(--font-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: var(--space-3);
  display: block;
}

[data-theme="light"] .section-label {
  color: var(--accent);
}

.section-title {
  font-size: var(--font-h1);
  color: var(--text);
  letter-spacing: -0.03em;
}

/* SVG Icon Base */
.icon {
  width: 18px;
  height: 18px;
  stroke-width: 1.5;
  stroke: currentColor;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* Tag / Badge */
.tag {
  display: inline-flex;
  align-items: center;
  font-size: var(--font-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--muted);
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.tag:hover {
  border-color: var(--border-medium);
  color: var(--text);
}

/* Plain Status Label */
.status-label {
  font-size: var(--font-xs);
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* Reveal states */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}