/* ===================================================
   ATELIER PIEKNA — Design System
   style.css: Reset, Custom Properties, Typography,
              Layout Utilities
   =================================================== */

/* ---------------------------------------------------
   1. CSS RESET
   --------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

img,
video,
svg {
  max-width: 100%;
  display: block;
}

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

button,
input,
textarea,
select {
  font: inherit;
  border: none;
  background: none;
}

/* ---------------------------------------------------
   2. CUSTOM PROPERTIES — Light Mode
   --------------------------------------------------- */
:root {
  /* Colors */
  --color-primary:   #B76E79;
  --color-bg:        #FFF8F0;
  --color-text:      #2D2D2D;
  --color-surface:   #F5E6E0;
  --color-accent:    #C9A96E;
  --color-accent-2:  #A8B5A0;

  /* Spacing (8px grid) */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   32px;
  --space-2xl:  48px;
  --space-3xl:  64px;
  --space-4xl:  96px;

  /* Border Radius */
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-subtle:   0 1px 4px rgba(45, 45, 45, 0.06),
                     0 2px 8px rgba(45, 45, 45, 0.04);
  --shadow-default:  0 4px 12px rgba(45, 45, 45, 0.10),
                     0 2px 6px rgba(45, 45, 45, 0.06);
  --shadow-elevated: 0 8px 24px rgba(45, 45, 45, 0.14),
                     0 4px 12px rgba(45, 45, 45, 0.08);

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
}

/* ---------------------------------------------------
   3. CUSTOM PROPERTIES — Dark Mode
   --------------------------------------------------- */
[data-theme="dark"] {
  --color-bg:      #1A1A1A;
  --color-surface: #242424;
  --color-primary: #C9A96E;
  --color-text:    #F5E6E0;

  --shadow-subtle:   0 1px 4px rgba(0, 0, 0, 0.30),
                     0 2px 8px rgba(0, 0, 0, 0.20);
  --shadow-default:  0 4px 12px rgba(0, 0, 0, 0.40),
                     0 2px 6px rgba(0, 0, 0, 0.28);
  --shadow-elevated: 0 8px 24px rgba(0, 0, 0, 0.50),
                     0 4px 12px rgba(0, 0, 0, 0.36);
}

/* ---------------------------------------------------
   4. BASE / BODY
   --------------------------------------------------- */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------------------------------------------------
   5. TYPOGRAPHY SCALE
   --------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  line-height: 1.2;
  font-weight: 600;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
}

h4 {
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

p {
  max-width: 68ch;
}

strong {
  font-weight: 600;
}

em {
  font-style: italic;
}

small {
  font-size: 0.875rem;
}

/* ---------------------------------------------------
   6. LAYOUT UTILITIES
   --------------------------------------------------- */

/* Container */
.container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-md);
}

/* Section */
.section {
  padding-block: var(--space-4xl);
}

.section-alt {
  background-color: var(--color-surface);
}

/* Responsive grid helpers */
.grid {
  display: grid;
  gap: var(--space-lg);
}

/* Mobile-first: 1 column by default */
.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

/* Flex utilities */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-col {
  flex-direction: column;
}

/* Spacing helpers */
.mt-auto  { margin-top: auto; }
.mb-auto  { margin-bottom: auto; }

/* Text utilities */
.text-center  { text-align: center; }
.text-left    { text-align: left; }
.text-primary { color: var(--color-primary); }
.text-accent  { color: var(--color-accent); }
.text-muted   { color: var(--color-text); opacity: 0.6; }

/* Visibility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------------------------------------------------
   7. RESPONSIVE BREAKPOINTS
   --------------------------------------------------- */

/* Tablet — 768px */
@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-xl);
  }

  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop — 1024px */
@media (min-width: 1024px) {
  .container {
    padding-inline: var(--space-2xl);
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Wide — 1440px */
@media (min-width: 1440px) {
  .container {
    max-width: 1320px;
    padding-inline: var(--space-3xl);
  }

  .section {
    padding-block: calc(var(--space-4xl) * 1.25);
  }
}