/* ============================================
   SOMMET — Base Styles
   Reset · Custom Properties · Typography
   ============================================ */

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

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

body {
  font-family: 'Cairo', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  line-height: 1.7;
  color: var(--stone-800);
  background-color: var(--stone-50);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

/* --- Custom Properties --- */
:root {
  /* Stone palette */
  --stone-50: #fafaf9;
  --stone-100: #f5f5f4;
  --stone-200: #e7e5e4;
  --stone-300: #d6d3d1;
  --stone-400: #a8a29e;
  --stone-500: #78716c;
  --stone-600: #57534e;
  --stone-700: #44403c;
  --stone-800: #292524;
  --stone-900: #1c1917;

  /* Accent — warm bronze */
  --accent: #6E533E;
  --accent-dark: #50412F;
  --accent-light: #9A7E62;

  /* Backgrounds */
  --cream: #F5F0EB;
  --white: #ffffff;

  /* Spacing scale */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 1.5rem;    /* 24px */
  --space-lg: 2.5rem;    /* 40px */
  --space-xl: 4rem;      /* 64px */
  --space-2xl: 6rem;     /* 96px */
  --space-3xl: 8rem;     /* 128px */
  --space-4xl: 10rem;    /* 160px */

  /* Section padding */
  --section-pad: var(--space-3xl) var(--space-lg);

  /* Max widths */
  --max-width: 1280px;
  --max-width-narrow: 800px;
  --max-width-wide: 1440px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 700ms;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(28, 25, 23, 0.04);
  --shadow-md: 0 4px 16px rgba(28, 25, 23, 0.06);
  --shadow-lg: 0 12px 40px rgba(28, 25, 23, 0.08);

  /* Nav height */
  --nav-height: 72px;
}

/* --- Typography --- */

h1, h2, h3, h4, h5, h6 {
  font-family: 'Amiri', Georgia, 'Times New Roman', serif;
  font-weight: 400;
  line-height: 1.15;
  color: var(--stone-900);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  letter-spacing: -0.015em;
  line-height: 1.1;
}

h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

h4 {
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
  letter-spacing: -0.005em;
  line-height: 1.3;
}

p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--stone-600);
}

.text-large {
  font-size: 1.125rem;
  line-height: 1.8;
}

.text-small {
  font-size: 0.875rem;
  line-height: 1.6;
}

.text-caption {
  font-size: 0.75rem;
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--stone-400);
}

.text-accent {
  color: var(--accent);
}

/* Label style for overlines */
.overline {
  font-family: 'Cairo', sans-serif;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
}

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

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

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

section {
  position: relative;
}

/* --- Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }

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

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

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

::-webkit-scrollbar-track {
  background: var(--stone-100);
}

::-webkit-scrollbar-thumb {
  background: var(--stone-300);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--stone-400);
}