@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,500;0,700;1,400&family=JetBrains+Mono:wght@400;500&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
  --color-bg: #F8ECE6;
  --color-surface: #EEDBD0;
  --color-border: #DABFAA;
  --color-fg: #2A1E18;
  --color-fg-muted: #7A6256;
  --color-fg-subtle: #AC968A;
  --color-accent: #2A1E18;
  --color-accent-hover: #443229;

  --font-display: 'Playfair Display', serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 20px;

  --transition-natural: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-slow: cubic-bezier(0.16, 1, 0.3, 1);
}

::selection {
  background: var(--color-fg);
  color: var(--color-bg);
}

html, body {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* 
==========================================================================
   UI BASE CLASSES (Tokens & Utilities)
========================================================================== 
*/

/* Buttons */
.btn {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  border: none;
  background: transparent;
  text-decoration: none;
  transition: all 0.3s var(--transition-natural);
  padding: 0.85rem 1.75rem;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-bg);
  border-radius: var(--radius-md);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(17, 17, 17, 0.12);
}

.btn-ghost {
  border: 1px solid var(--color-border);
  color: var(--color-fg);
  border-radius: var(--radius-md);
}

.btn-ghost:hover {
  border-color: var(--color-fg);
  background-color: rgba(17, 17, 17, 0.03);
}

.btn-text {
  padding: 0.5rem 0;
  color: var(--color-fg);
  border-bottom: 1px solid transparent;
}

.btn-text:hover {
  border-bottom-color: var(--color-fg);
}

.btn .icon-arrow {
  transition: transform 0.3s var(--transition-natural);
  display: inline-flex;
}

.btn:hover .icon-arrow {
  transform: translateX(6px);
}

/* Tags */
.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  background-color: var(--color-surface);
  color: var(--color-fg-muted);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  display: inline-block;
}

/* Section Label */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-fg-muted);
  display: block;
  margin-bottom: 1.5rem;
}

/* 
==========================================================================
   EFFECTS & UTILITIES
========================================================================== 
*/

/* Custom Grain Background via SVG Filter */
.bg-grain {
  position: relative;
  background-color: var(--color-bg);
  overflow: hidden;
}

.bg-grain::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-image: url('data:image/svg+xml;utf8,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)"/%3E%3C/svg%3E');
  opacity: 0.06;
  z-index: 0;
}

.bg-grain > * {
  position: relative;
  z-index: 1;
}

/* 
==========================================================================
   ANIMATION TOKENS
========================================================================== 
*/

[data-animate="fade-up"] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--transition-slow), transform 0.6s var(--transition-slow);
}

[data-animate="fade-in"] {
  opacity: 0;
  transition: opacity 0.5s var(--transition-natural);
}

[data-animate="slide-in-left"] {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s var(--transition-slow), transform 0.6s var(--transition-slow);
}

.is-visible[data-animate="fade-up"] {
  opacity: 1;
  transform: translateY(0);
}

.is-visible[data-animate="fade-in"] {
  opacity: 1;
}

.is-visible[data-animate="slide-in-left"] {
  opacity: 1;
  transform: translateX(0);
}

[data-animate="scale-up"] {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.6s var(--transition-natural), transform 0.6s var(--transition-spring);
}

.is-visible[data-animate="scale-up"] {
  opacity: 1;
  transform: scale(1);
}