/* ========================================================================== 
   Variables
   ========================================================================== */
:root {
  /* Colors - warm neutrals & understated earth tones */
  --color-background: #f5f1ec;
  --color-surface: #ffffff;
  --color-surface-muted: #f0ebe4;

  --color-text: #23201c;
  --color-text-muted: #6c645a;
  --color-border-subtle: #e0d6c8;

  --color-primary: #9f6b3f;        /* warm, sophisticated accent */
  --color-primary-soft: #f0e2d3;
  --color-primary-strong: #7e5230;

  --color-success: #3c7a5b;
  --color-warning: #b58533;
  --color-danger: #b44a3b;

  --gray-50: #faf7f3;
  --gray-100: #f2ebe3;
  --gray-200: #e4dacd;
  --gray-300: #d4c7b6;
  --gray-400: #b6a28a;
  --gray-500: #8d7458;
  --gray-600: #705a45;
  --gray-700: #524131;
  --gray-800: #392c21;
  --gray-900: #231b14;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Playfair Display", "Times New Roman", serif;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-md: 1.0625rem; /* 17px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 2rem;     /* 32px */
  --font-size-4xl: 2.5rem;   /* 40px */

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.6;

  /* Spacing scale (px values) */
  --space-0: 0;
  --space-4: 0.25rem;   /* 4px */
  --space-8: 0.5rem;    /* 8px */
  --space-12: 0.75rem;  /* 12px */
  --space-16: 1rem;     /* 16px */
  --space-20: 1.25rem;  /* 20px */
  --space-24: 1.5rem;   /* 24px */
  --space-32: 2rem;     /* 32px */
  --space-40: 2.5rem;   /* 40px */
  --space-48: 3rem;     /* 48px */
  --space-64: 4rem;     /* 64px */
  --space-80: 5rem;     /* 80px */
  --space-96: 6rem;     /* 96px */

  /* Radius */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  /* Shadows - soft, architectural */
  --shadow-soft: 0 8px 20px rgba(0, 0, 0, 0.04);
  --shadow-medium: 0 16px 40px rgba(0, 0, 0, 0.06);

  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-normal: 220ms ease-out;
  --transition-slow: 320ms ease-out;
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-normal: 0ms;
    --transition-slow: 0ms;
  }
}

/* ========================================================================== 
   Reset / Normalize
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
}

h1, h2, h3, h4, h5, h6,
p, figure, blockquote,
dl, dd {
  margin: 0;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  border: none;
  padding: 0;
  background: none;
}

textarea {
  resize: vertical;
}

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

/* Remove animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================================================== 
   Base
   ========================================================================== */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.25rem, 3vw, 2.75rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-24);
}

h2 {
  font-size: clamp(1.75rem, 2.4vw, 2.25rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-20);
}

h3 {
  font-size: clamp(1.35rem, 1.8vw, 1.75rem);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-16);
}

h4 {
  font-size: 1.125rem;
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-12);
}

p {
  margin-bottom: var(--space-16);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
}

small {
  font-size: var(--font-size-sm);
}

a {
  position: relative;
  transition: color var(--transition-normal);
}

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

/* Subtle underline on hover for better affordance */
a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.1em;
  width: 0;
  height: 1px;
  background-color: currentColor;
  transition: width var(--transition-normal);
}

a:hover::after {
  width: 100%;
}

/* ========================================================================== 
   Accessibility / Focus Styles
   ========================================================================== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

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

/* ========================================================================== 
   Utilities
   ========================================================================== */
/* Layout container */
.container {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: var(--space-16);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-24);
  }
}

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

.inline-flex {
  display: inline-flex;
}

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

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

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

.gap-8 { gap: var(--space-8); }
.gap-12 { gap: var(--space-12); }
.gap-16 { gap: var(--space-16); }
.gap-24 { gap: var(--space-24); }
.gap-32 { gap: var(--space-32); }

/* Grid helper */
.grid {
  display: grid;
  gap: var(--space-24);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-24);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-24);
}

@media (max-width: 767px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Simple spacing utilities (margin-bottom only for vertical rhythm) */
.mb-0 { margin-bottom: 0 !important; }
.mb-8 { margin-bottom: var(--space-8) !important; }
.mb-12 { margin-bottom: var(--space-12) !important; }
.mb-16 { margin-bottom: var(--space-16) !important; }
.mb-24 { margin-bottom: var(--space-24) !important; }
.mb-32 { margin-bottom: var(--space-32) !important; }
.mb-40 { margin-bottom: var(--space-40) !important; }
.mb-64 { margin-bottom: var(--space-64) !important; }

.text-center { text-align: center; }
.text-right { text-align: right; }

/* ========================================================================== 
   Components
   ========================================================================== */
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  background-color: var(--color-primary-strong);
  border-color: var(--color-primary-strong);
  box-shadow: var(--shadow-medium);
  transform: translateY(-1px);
  color: #fff;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--gray-300);
}

.btn-outline:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-text);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: transparent;
}

.btn-ghost:hover {
  background-color: rgba(0, 0, 0, 0.02);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
}

/* Inputs / Textareas / Selects */
.input,
textarea,
select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  background-color: #fff;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    background-color var(--transition-normal);
}

.input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary-soft);
}

.input[aria-invalid="true"],
textarea[aria-invalid="true"],
select[aria-invalid="true"] {
  border-color: var(--color-danger);
}

label {
  display: block;
  margin-bottom: var(--space-8);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.form-helper {
  margin-top: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.form-error {
  margin-top: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* Cards - for portfolio, services, case studies */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(0, 0, 0, 0.02);
}

.card-muted {
  background-color: var(--color-surface-muted);
}

.card-header {
  margin-bottom: var(--space-16);
}

.card-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.card-body {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Image wrappers for portfolio visuals */
.card-image,
.media-cover {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--gray-100);
}

.card-image img,
.media-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image img,
.media-cover:hover img {
  transform: scale(1.03);
}

/* Simple tag / pill for categories (e.g., apartment / dom / kuchnia) */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-primary-strong);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Section spacing helpers */
.section {
  padding-block: var(--space-48);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-80);
  }
}

.section-header {
  margin-bottom: var(--space-32);
}

.section-kicker {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 2.4vw, 2.2rem);
  margin-bottom: var(--space-12);
}

.section-lead {
  max-width: 40rem;
  color: var(--color-text-muted);
}

/* End of base.css */