/* ========================================================================== 
   Variables
   ========================================================================== */
:root {
  /* Colors */
  --color-bg: #f5f7fb;
  --color-surface: #ffffff;
  --color-text: #111827;
  --color-text-muted: #6b7280;

  --color-primary: #0f4598; /* deep print-inspired blue */
  --color-primary-soft: #e3edff;
  --color-primary-contrast: #ffffff;

  --color-accent: #e11d48; /* vibrant print-inspired red */
  --color-accent-soft: #ffe4ea;

  --color-success: #16a34a;
  --color-warning: #f59e0b;
  --color-danger: #dc2626;

  --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: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 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 (px) */
  --space-0: 0px;
  --space-1: 2px;
  --space-2: 4px;
  --space-3: 6px;
  --space-4: 8px;
  --space-5: 10px;
  --space-6: 12px;
  --space-8: 16px;
  --space-10: 20px;
  --space-12: 24px;
  --space-16: 32px;
  --space-20: 40px;
  --space-24: 48px;
  --space-28: 56px;
  --space-32: 64px;
  --space-40: 80px;
  --space-48: 96px;

  /* Radius */
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  /* Shadows - crisp, print-like depth */
  --shadow-sm: 0 4px 12px rgba(15, 17, 32, 0.06);
  --shadow-md: 0 12px 30px rgba(15, 17, 32, 0.12);
  --shadow-lg: 0 18px 40px rgba(9, 11, 23, 0.18);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 180ms ease-out;
  --transition-slow: 250ms ease-out;
}

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

html,
body {
  margin: 0;
  padding: 0;
}

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

body {
  min-height: 100vh;
}

img,
svg,
video,
canvas,
audio,
iframe {
  max-width: 100%;
  height: auto;
}

img {
  display: block;
}

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

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

ul[class],
ol[class] {
  padding: 0;
  list-style: none;
}

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

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

main {
  display: block;
}

/* Headings - modern hierarchy for print services site */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--line-height-tight);
}

h1 {
  font-size: clamp(2.5rem, 3.4vw, var(--font-size-5xl));
  letter-spacing: -0.04em;
  margin-bottom: var(--space-8);
}

h2 {
  font-size: clamp(2rem, 2.6vw, var(--font-size-4xl));
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

h3 {
  font-size: clamp(1.5rem, 2vw, var(--font-size-3xl));
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-3);
}

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

h6 {
  font-size: var(--font-size-lg);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text);
  /* comfortable line length */
}

p.lead {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
}

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

/* Links - clean, print-inspired accents */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base),
              text-decoration-color var(--transition-base),
              opacity var(--transition-fast);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Lists */
ul,
ol {
  margin: 0 0 var(--space-4) var(--space-6);
  padding: 0;
}

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

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

.sr-only-focusable:active,
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* ========================================================================== 
   Utilities
   ========================================================================== */
/* Layout container for crisp, centered content */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-8);
  padding-right: var(--space-8);
  max-width: 1200px;
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* 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-col {
  flex-direction: column;
}

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

/* Grid helpers */
.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-8);
}

@media (max-width: 900px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Width helpers */
.w-full { width: 100%; }
.max-w-prose { max-width: 72ch; }

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

/* Spacing utilities (subset for common use) */
.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-16 { margin-top: var(--space-16); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-16 { margin-bottom: var(--space-16); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }

/* ========================================================================== 
   Components
   ========================================================================== */
/* Buttons - sleek, high-contrast call to action */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1;
  cursor: pointer;
  transition: background-color var(--transition-base),
              color var(--transition-base),
              box-shadow var(--transition-base),
              transform var(--transition-fast),
              border-color var(--transition-base);
  user-select: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #0b3573, var(--color-primary));
  color: var(--color-primary-contrast);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, #0d3f86, #123f8f);
}

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

.btn-secondary:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

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

.btn-ghost:hover {
  background-color: var(--color-primary-soft);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

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

/* Form inputs - clean and consistent for quote/contact forms */
.input,
textarea,
select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  transition: border-color var(--transition-base),
              box-shadow var(--transition-base),
              background-color var(--transition-base);
}

.input::placeholder,
textarea::placeholder {
  color: var(--gray-400);
}

.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), var(--shadow-sm);
}

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

label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.form-helper {
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.form-error {
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* Card - for services, portfolio, testimonials */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-8);
  border: 1px solid rgba(15, 23, 42, 0.03);
  transition: box-shadow var(--transition-base),
              transform var(--transition-fast),
              border-color var(--transition-base);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(15, 23, 42, 0.08);
}

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

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

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

.card-media img {
  border-radius: var(--radius-md);
}

/* Tag / badge - for status like "Ekspres" / "Nowość" */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge-primary {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
}

.badge-accent {
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
}

/* Media emphasis - crisp imagery */
.print-media-shadow {
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.22);
  border-radius: var(--radius-lg);
}

/* Hero section utility for modern above-the-fold */
.section-hero {
  padding-top: var(--space-40);
  padding-bottom: var(--space-32);
}

@media (max-width: 768px) {
  .section-hero {
    padding-top: var(--space-28);
    padding-bottom: var(--space-20);
  }
}

.section-default {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

@media (max-width: 768px) {
  .section-default {
    padding-top: var(--space-20);
    padding-bottom: var(--space-20);
  }
}

/* Subtle section dividers reminiscent of print grids */
.section-divider {
  border-top: 1px solid var(--gray-200);
}

/* Testimonials quote style */
.quote {
  position: relative;
  padding-left: var(--space-8);
}

.quote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 3px;
  border-radius: var(--radius-pill);
  background: linear-gradient(var(--color-primary), var(--color-accent));
}

.quote-text {
  font-style: italic;
  color: var(--color-text-muted);
}

.quote-author {
  margin-top: var(--space-3);
  font-weight: 600;
}

/* Navigation helpers */
.nav-inline {
  display: inline-flex;
  gap: var(--space-6);
  align-items: center;
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link-active {
  color: var(--color-primary);
  position: relative;
}

.nav-link-active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}