/* ============================================
   YOGA MAKİNA — Design System Foundation
   CNC & Otomasyon
   ============================================ */

/* Google Fonts loaded via <link> tags in HTML */

/* === CSS Reset === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--black);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

a:hover {
  opacity: 0.8;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* === Design Tokens === */
:root {
  /* ── Colors ── */
  --black: #000000;
  --black-soft: #0a0a0a;
  --black-muted: #111111;
  --black-lighter: #1a1a1a;
  
  --white: #ffffff;
  --white-soft: #f5f5f7;
  --white-muted: #e8e8ed;
  
  --gray-50: #fafafa;
  --gray-100: #f0f0f0;
  --gray-200: #d6d6d6;
  --gray-300: #b0b0b0;
  --gray-400: #8a8a8a;
  --gray-500: #666666;
  --gray-600: #444444;
  --gray-700: #333333;
  --gray-800: #222222;
  --gray-900: #1a1a1a;
  
  /* ── Backgrounds ── */
  --bg-primary: var(--white);
  --bg-dark: var(--black);
  --bg-dark-soft: var(--black-soft);
  --bg-light: var(--white-soft);
  --bg-muted: var(--gray-50);
  
  /* ── Text ── */
  --text-primary: var(--black);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-400);
  --text-on-dark: var(--white);
  --text-on-dark-secondary: var(--gray-300);
  --text-on-dark-muted: var(--gray-500);
  
  /* ── Typography ── */
  --font-heading: 'Space Grotesk', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;
  --text-hero: clamp(4rem, 12vw, 10rem);
  --text-hero-sub: clamp(1.5rem, 4vw, 3rem);
  
  --leading-tight: 1.1;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;
  
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;
  --tracking-widest: 0.2em;
  
  /* ── Spacing ── */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  --space-section: clamp(5rem, 12vh, 10rem);
  
  /* ── Border Radius ── */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;
  
  /* ── Easings ── */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  
  --transition-fast: 0.15s var(--ease-in-out);
  --transition-normal: 0.3s var(--ease-out-quart);
  --transition-slow: 0.6s var(--ease-out-expo);
  --transition-slower: 1s var(--ease-out-expo);
  
  /* ── Shadows ── */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 24px rgba(0,0,0,0.12);
  --shadow-xl: 0 24px 48px rgba(0,0,0,0.16);
  --shadow-2xl: 0 32px 64px rgba(0,0,0,0.24);
  --shadow-inner: inset 0 2px 4px rgba(0,0,0,0.06);
  
  /* ── Z-index ── */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-header: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-dock: 900;
  --z-max: 1000;
  
  /* ── Layout ── */
  --container-max: 1200px;
  --container-wide: 1440px;
  --container-narrow: 800px;
  --header-height: 80px;
  --dock-width: 68px;
  --dock-expanded: 200px;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h1 { font-size: var(--text-6xl); }
h2 { font-size: var(--text-5xl); }
h3 { font-size: var(--text-4xl); }
h4 { font-size: var(--text-3xl); }
h5 { font-size: var(--text-2xl); }
h6 { font-size: var(--text-xl); }

p {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
}

.text-label {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-muted);
}

.text-label-light {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-on-dark-muted);
}

/* === Layout Utilities === */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--wide {
  max-width: var(--container-wide);
}

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

.section {
  padding: var(--space-section) 0;
  position: relative;
  background-color: var(--white);
  color: var(--text-primary);
}

.section--dark {
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
}

.section--dark p {
  color: var(--text-on-dark-secondary);
}

.section--dark .text-label {
  color: var(--text-on-dark-muted);
}

.section--light {
  background-color: var(--white-soft);
}

.section--muted {
  background-color: var(--gray-50);
}

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }
.gap-3xl { gap: var(--space-3xl); }

/* Grid utilities */
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Text alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Margin utilities */
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }

.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }

/* Section heading block */
.section-header {
  margin-bottom: var(--space-3xl);
}

.section-header .text-label {
  margin-bottom: var(--space-md);
  display: block;
}

.section-header h2 {
  margin-bottom: var(--space-lg);
}

.section-header p {
  max-width: 600px;
  font-size: var(--text-lg);
}

.section-header.text-center p {
  margin-left: auto;
  margin-right: auto;
}

/* === Noise Texture Overlay === */
.noise-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.03;
  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-repeat: repeat;
  background-size: 256px 256px;
  pointer-events: none;
  z-index: 1;
}

/* === Scroll Reveal Animation Base === */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* === Selection === */
::selection {
  background-color: var(--black);
  color: var(--white);
}

/* === Scrollbar === */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}

/* === Responsive === */
@media (max-width: 1024px) {
  :root {
    --text-6xl: 3.5rem;
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
  }
  
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --text-6xl: 2.5rem;
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
    --space-section: 4rem;
    --header-height: 64px;
  }
  
  .container {
    padding: 0 var(--space-lg);
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .hide-mobile { display: none !important; }
}

@media (max-width: 480px) {
  :root {
    --text-6xl: 2rem;
    --text-5xl: 1.75rem;
    --text-hero: clamp(2.5rem, 14vw, 5rem);
  }
}