/* ==================================================================
   Variables
   ================================================================== */
:root {
  /* Color Palette - Industrial Theme */
  --color-background: #0d1117;          /* deep navy / charcoal */
  --color-surface: #111827;             /* dark steel surface */
  --color-surface-alt: #1f2933;         /* slightly lighter surface */
  --color-text: #e5e7eb;                /* soft light gray */
  --color-text-muted: #9ca3af;          /* muted gray */
  --color-border: #3f4a5a;              /* subtle border gray */

  --color-primary: #1f3b5b;             /* deep navy blue */
  --color-primary-soft: #1f3b5b1a;      /* translucent primary */
  --color-primary-strong: #102538;      /* darker primary for hovers */

  --color-accent: #f97316;              /* industrial accent orange */
  --color-accent-soft: #f973161a;       /* translucent accent */

  --color-success: #16a34a;             /* success green */
  --color-warning: #eab308;             /* warning yellow */
  --color-danger: #dc2626;              /* danger red */

  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2933;
  --color-gray-900: #111827;

  --color-steel-silver: #c4c9d4;        /* steel silver highlight */

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: "Fira Code", Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;

  --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-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing Scale (px) */
  --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-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-xl: 16px;
  --radius-full: 999px;

  /* Shadows - subtle, technical */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.25);
  --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);

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

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

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

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

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

body {
  margin: 0;
}

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

ol,
ul {
  padding-left: var(--space-5);
}

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

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

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

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

pre,
code,
kbd,
samp {
  font-family: var(--font-mono);
}

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

main {
  min-height: 60vh;
}

/* Headings - structured, industrial scale */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-gray-50);
}

h1 {
  font-size: clamp(2.25rem, 2.3vw + 1.8rem, 3rem);
  letter-spacing: 0.02em;
}

h2 {
  font-size: clamp(1.875rem, 1.8vw + 1.4rem, 2.25rem);
}

h3 {
  font-size: clamp(1.5rem, 1.4vw + 1.1rem, 1.875rem);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1,
h2,
h3 {
  margin-bottom: var(--space-4);
}

h4,
h5,
h6 {
  margin-bottom: var(--space-3);
}

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

strong,
b {
  font-weight: 600;
}

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

/* Links - understated, with accent hover */
a {
  color: var(--color-accent);
  text-decoration: none;
  text-underline-offset: 0.12em;
  transition: color var(--transition-normal),
    text-decoration-color var(--transition-normal),
    background-color var(--transition-fast);
}

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

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

/* Horizontal Rule */
hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

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


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

:focus {
  outline: none;
}

/* Screen reader only utility */
.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;
}

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

/* ==================================================================
   Layout & Utilities
   ================================================================== */

/* Page container: centered content with industrial breathing room */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  max-width: 1120px;
}

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

.section {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.section--tight {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

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

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

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

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--space-3);
}

.gap-md {
  gap: var(--space-4);
}

.gap-lg {
  gap: var(--space-6);
}

/* Grid helpers */
.grid {
  display: grid;
  gap: var(--space-6);
}

.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: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

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

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

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

/* Width helpers */
.w-100 {
  width: 100%;
}



/* Spacing utilities (selected) */
.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-4 { padding-top: var(--space-4); }
.pt-8 { padding-top: var(--space-8); }
.pb-4 { padding-bottom: var(--space-4); }
.pb-8 { padding-bottom: var(--space-8); }
.px-4 {
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

/* ==================================================================
   Form Elements
   ================================================================== */

label {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-gray-200);
}

input,
select,
textarea {
  width: 100%;
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  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,
select:focus-visible,
textarea:focus-visible {
  outline: 0;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

input[disabled],
select[disabled],
textarea[disabled],
input[readonly],
textarea[readonly] {
  opacity: 0.6;
  cursor: not-allowed;
}

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

/* ==================================================================
   Buttons
   ================================================================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color var(--transition-normal),
    color var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.button--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #ffffff;
  box-shadow: var(--shadow-xs);
}

.button--primary:hover {
  background: linear-gradient(135deg, var(--color-primary-strong), var(--color-primary));
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.button--accent {
  background-color: var(--color-accent);
  color: #0b1120!important;
}

.button--accent:hover {
  background-color: #ea580c;
  box-shadow: var(--shadow-sm);
}

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

.button--ghost:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-accent);
}

.button--outline {
  background-color: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.button--outline:hover {
  background-color: var(--color-accent-soft);
}

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

.button[disabled],
.button--disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* ==================================================================
   Cards & Surfaces
   ================================================================== */

.card {
  background: linear-gradient(145deg, var(--color-surface), var(--color-surface-alt));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.15);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
}

.card--compact {
  padding: var(--space-4);
}

.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);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--color-text-muted);
}

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

/* Simple badge for status / Polish UI labels */
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-full);
  padding: 0.15rem 0.6rem;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: var(--color-steel-silver);
}

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

.badge--success {
  border-color: transparent;
  background-color: rgba(22, 163, 74, 0.1);
  color: var(--color-success);
}

/* ==================================================================
   Media & Imagery
   ================================================================== */

.img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

/* Overlay utility for hero / industrial imagery */
.overlay-dark {
  position: relative;
}

.overlay-dark::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.1), transparent 55%),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.65), rgba(15, 23, 42, 0.95));
  pointer-events: none;
}

/* ==================================================================
   Misc Helpers
   ================================================================== */

.tagline {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-accent);
}

.muted-border {
  border-color: var(--color-border) !important;
}

.highlight-steel {
  color: var(--color-steel-silver);
}

/* End of base.css */