/* ========================================================================== 
   Variables
   ========================================================================== */

:root {
  /* Color Palette - signage inspired */
  --color-background: #050814; /* deep, sleek backdrop */
  --color-surface: #0e1524;
  --color-surface-alt: #141b2c;
  --color-text: #f5f7ff;
  --color-text-muted: #a6b0cf;

  --color-primary: #2f7cff; /* vibrant signage blue */
  --color-primary-soft: rgba(47, 124, 255, 0.16);
  --color-primary-strong: #1c5bd4;

  --color-success: #30c48d;
  --color-warning: #ffd157;
  --color-danger: #ff4d6a;

  --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, "Inter", "Segoe UI", Roboto, 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: 1.15;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* 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-7: 1.75rem;  /* 28px */
  --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: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 999px;

  /* Shadows - sharp, illuminated accents */
  --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 14px 40px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 80px rgba(0, 0, 0, 0.6);
  --shadow-glow-primary: 0 0 30px rgba(47, 124, 255, 0.55);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-normal: 200ms ease;
  --transition-slow: 320ms ease;
}

/* Respect user 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;
}

* {
  margin: 0;
}

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

body {
  min-height: 100vh;
}

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

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

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

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

ul,
ol {
  padding-left: 1.25rem;
}

/* ========================================================================== 
   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;
}

main {
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--line-height-snug);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-5xl));
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(var(--font-size-xl), 2.4vw, var(--font-size-3xl));
}

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;
}

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

strong {
  font-weight: 600;
  color: var(--color-text);
}

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

a {
  position: relative;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-normal), opacity var(--transition-fast);
}

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

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

code,
pre {
  font-family: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

hr {
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin: var(--space-6) 0;
}

/* ========================================================================== 
   Accessibility & Focus
   ========================================================================== */

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

:focus {
  outline: none;
}

/* 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;
}

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

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

/* Container for centered, responsive layout */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  max-width: 1200px;
}

@media (min-width: 1440px) {
  .container {
    max-width: 1320px;
  }
}

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

/* Flex utilities */
.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;
}

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

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

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

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

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Alignment helpers */
.text-center {
  text-align: center;
}

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

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

.max-w-readable {
  max-width: 70ch;
}

/* Spacing helpers (limited, general-use) */
.mt-4 {
  margin-top: var(--space-4);
}

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

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

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

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

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

/* ========================================================================== 
   Components
   ========================================================================== */

/* Buttons - primary CTA style evokes illuminated signage */
.button,
button,
input[type="button"],
input[type="submit"],
input[type="reset"] {
  --btn-bg: var(--color-primary);
  --btn-color: #ffffff;
  --btn-border: transparent;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--btn-border);
  background: radial-gradient(circle at 10% 0, rgba(161, 200, 255, 0.5), transparent 55%), var(--btn-bg);
  color: var(--btn-color);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition:
    background var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.button--secondary {
  --btn-bg: transparent;
  --btn-color: var(--color-text);
  --btn-border: rgba(255, 255, 255, 0.18);
  box-shadow: none;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0));
}

.button--ghost {
  --btn-bg: transparent;
  --btn-color: var(--color-text-muted);
  --btn-border: transparent;
  box-shadow: none;
  padding-left: 0;
  padding-right: 0;
}

.button:hover,
button:hover,
input[type="button"]:hover,
input[type="submit"]:hover,
input[type="reset"]:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow-primary);
}

.button--secondary:hover {
  box-shadow: var(--shadow-md);
}

.button--ghost:hover {
  box-shadow: none;
}

.button:active,
button:active,
input[type="button"]:active,
input[type="submit"]:active,
input[type="reset"]:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.button:disabled,
button:disabled,
input[type="button"]:disabled,
input[type="submit"]:disabled,
input[type="reset"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

.button:focus-visible,
button:focus-visible,
input[type="button"]:focus-visible,
input[type="submit"]:focus-visible,
input[type="reset"]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Form inputs */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="password"],
input[type="search"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background-color: rgba(8, 12, 26, 0.95);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.6);
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    background-color var(--transition-normal);
}

input::placeholder,
textarea::placeholder {
  color: rgba(166, 176, 207, 0.7);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), 0 0 0 12px rgba(47, 124, 255, 0.15);
}

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

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

/* Cards - for case studies, testimonials, press */
.card {
  position: relative;
  background: radial-gradient(circle at 0 0, rgba(47, 124, 255, 0.15), transparent 50%), var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

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

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

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

.card-meta {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

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

/* Media wrapper for consistent rounded imagery */
.card-media,
.media-rounded {
  overflow: hidden;
  border-radius: var(--radius-md);
}

.card-media img,
.media-rounded img {
  width: 100%;
  height: auto;
}

/* Tag / pill for categories (e.g., press, case study type) */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background-color: rgba(10, 16, 35, 0.9);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge--primary {
  border-color: rgba(47, 124, 255, 0.6);
  color: #d6e4ff;
  background: linear-gradient(135deg, rgba(47, 124, 255, 0.4), rgba(47, 124, 255, 0));
}

/* ========================================================================== 
   Helper Classes for Theming
   ========================================================================== */

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

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

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

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

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

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

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

.shadow-sm {
  box-shadow: var(--shadow-sm);
}

.shadow-md {
  box-shadow: var(--shadow-md);
}

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

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

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

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

/* Subtle hover elevation for interactive blocks */
.hover-elevate {
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.hover-elevate:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ========================================================================== 
   End of base.css
   ========================================================================== */