/* ==================================================================
   Variables
   ================================================================== */
:root {
  /* Colors */
  --color-background: #0f1216;
  --color-surface: #15191f;
  --color-surface-alt: #1d222a;
  --color-text: #f5f5f5;
  --color-text-muted: #a5aab4;
  --color-border-subtle: #2a303b;

  --color-primary: #c89b5f; /* warm elegant accent, brass/gold */
  --color-primary-soft: rgba(200, 155, 95, 0.12);
  --color-primary-hover: #d4aa6e;

  --color-success: #4caf50;
  --color-warning: #ffb300;
  --color-danger: #e53935;

  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2933;
  --gray-900: #101827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", sans-serif;
  --font-serif: "Playfair Display", "Times New Roman", serif;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-md: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */
  --font-size-5xl: 3rem;     /* 48px */

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

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

  /* Shadows */
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.25);
  --shadow-elevated: 0 18px 45px rgba(0, 0, 0, 0.35);
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.4);

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

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

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  margin: 0;
}

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

ul, ol {
  margin: 0;
  padding: 0;
}

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

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

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

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

table {
  border-collapse: collapse;
  border-spacing: 0;
}

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

main {
  display: block;
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.5rem, 4vw, var(--font-size-5xl));
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.875rem, 3vw, var(--font-size-4xl));
  margin-bottom: var(--space-3);
}

h3 {
  font-size: clamp(1.5rem, 2.4vw, var(--font-size-3xl));
  margin-bottom: var(--space-3);
}

h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
}

h5 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

strong, b {
  font-weight: 600;
}

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

a {
  transition: color var(--transition-normal), opacity var(--transition-fast);
}

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

hr {
  border: none;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-6) 0;
}

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

@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;
  }
}

/* ==================================================================
   Utilities
   ================================================================== */
.container {
  width: 100%;
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
  }
}

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

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

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

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

.flex-wrap {
  flex-wrap: wrap;
}

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.grid-3 {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 992px) {
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

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

.m-auto {
  margin: auto;
}

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.pt-8 { padding-top: var(--space-8); }
.pb-8 { padding-bottom: var(--space-8); }

.section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.section--dark {
  background: radial-gradient(circle at top, #1d232d 0, #0f1216 55%, #050608 100%);
}

.section__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

/* 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;
}

/* ==================================================================
   Components
   ================================================================== */
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.03em;
  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: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: #111;
  box-shadow: var(--shadow-soft);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-elevated);
  color: #111;
}

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

.btn--ghost:hover {
  border-color: var(--color-primary);
  background-color: rgba(255, 255, 255, 0.02);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Form elements */
.input,
textarea,
select {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(12, 15, 20, 0.9);
  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-fast);
}

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

.input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(200, 155, 95, 0.6);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.form-row {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .form-row--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Card */
.card {
  background: linear-gradient(145deg, rgba(20, 24, 31, 0.98), rgba(9, 11, 15, 0.98));
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid rgba(255, 255, 255, 0.02);
  box-shadow: var(--shadow-soft);
}

.card--subtle {
  background-color: var(--color-surface);
  box-shadow: var(--shadow-subtle);
}

.card__header {
  margin-bottom: var(--space-4);
}

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-1);
}

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

/* Hero / Visual emphasis (for homepage) */
.hero {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  background:
    radial-gradient(circle at 0 0, rgba(200, 155, 95, 0.16) 0, transparent 55%),
    linear-gradient(160deg, #050608 0, #0f1216 40%, #181c24 100%);
}

.hero__kicker {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.hero__heading {
  font-size: clamp(2.7rem, 4.4vw, 3.4rem);
  max-width: 18ch;
  margin-bottom: var(--space-4);
}

.hero__lead {
  max-width: 38ch;
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Gallery grid (homepage & realizacje) */
.gallery-grid {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .gallery-grid__item--large {
    grid-column: span 7;
  }

  .gallery-grid__item--tall {
    grid-column: span 5;
  }
}

.gallery-grid__item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-alt);
}

.gallery-grid__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform var(--transition-slow), filter var(--transition-slow), opacity var(--transition-slow);
}

.gallery-grid__item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.55), transparent 45%);
  opacity: 0.9;
  pointer-events: none;
}

.gallery-grid__label {
  position: absolute;
  left: 1.4rem;
  bottom: 1.4rem;
  z-index: 1;
  color: #fff;
}

.gallery-grid__label-title {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.gallery-grid__label-desc {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.8);
}

.gallery-grid__item:hover .gallery-grid__image {
  transform: scale(1.05);
  filter: saturate(1.1);
  opacity: 0.98;
}

/* Category Chip (e.g., Nowoczesne, Klasyczne) */
.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-text-muted);
  background-color: rgba(10, 13, 18, 0.9);
}

.chip--active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
}

/* Steps / Process (Krok po kroku) */
.steps {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.step {
  position: relative;
  padding-top: var(--space-4);
}

.step__number {
  width: 4rem;
  height: 4rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  line-height: 1.1;
  font-weight: 600;
}

.step__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

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

/* Page-specific helpers (O nas / Realizacje) */
.page-intro {
  max-width: 40rem;
  margin-bottom: var(--space-8);
}

.page-intro__kicker {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.page-intro__title {
  font-size: clamp(2rem, 3vw, 2.5rem);
  margin-bottom: var(--space-3);
}

.page-intro__lead {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
}

/* Navigation shell */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 6, 8, 0.95), rgba(5, 6, 8, 0.85));
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--font-size-sm);
}

.nav a {
  position: relative;
  padding-bottom: 0.2rem;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

.nav a:hover::after,
.nav a[aria-current="page"]::after {
  width: 100%;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: var(--space-8);
  padding-bottom: var(--space-6);
  background: #050608;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.site-footer__top {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
  .site-footer__top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  align-items: center;
}

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