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

:root {
  /* Color Palette */
  --color-background: #05060a;
  --color-surface: #10131a;
  --color-surface-soft: #171b24;
  --color-surface-alt: #0b0e15;

  --color-text: #f5f5f7;
  --color-text-muted: #a4a7b3;
  --color-border-subtle: #262a35;
  --color-border-strong: #3a3f4f;

  --color-primary: #ff4b5c;
  --color-primary-soft: rgba(255, 75, 92, 0.12);
  --color-primary-strong: #ff1f38;

  --color-success: #3ad29f;
  --color-success-soft: rgba(58, 210, 159, 0.14);

  --color-warning: #ffb347;
  --color-warning-soft: rgba(255, 179, 71, 0.18);

  --color-danger: #ff4b5c;
  --color-danger-soft: rgba(255, 75, 92, 0.16);

  --color-gray-50: #f8fafc;
  --color-gray-100: #eef1f6;
  --color-gray-200: #e0e4ee;
  --color-gray-300: #c7ccd9;
  --color-gray-400: #9ca3b8;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2933;
  --color-gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Roboto", "Segoe UI", sans-serif;
  --font-heading: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Poppins", "Montserrat", sans-serif;
  --font-mono: "SF Mono", 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-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: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */
  --font-size-5xl: 3rem;     /* 48px */

  --line-height-tight: 1.2;
  --line-height-base: 1.5;
  --line-height-relaxed: 1.7;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* 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-9: 2.25rem;  /* 36px */
  --space-10: 2.5rem;  /* 40px */
  --space-11: 2.75rem; /* 44px */
  --space-12: 3rem;    /* 48px */
  --space-14: 3.5rem;  /* 56px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radius */
  --radius-none: 0;
  --radius-sm: 0.25rem;  /* 4px */
  --radius-md: 0.5rem;   /* 8px */
  --radius-lg: 0.75rem;  /* 12px */
  --radius-xl: 1rem;     /* 16px */
  --radius-pill: 999px;

  /* Shadows */
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.35);
  --shadow-subtle: 0 12px 30px rgba(0, 0, 0, 0.28);
  --shadow-hard: 0 24px 70px rgba(0, 0, 0, 0.6);
  --shadow-focus: 0 0 0 2px rgba(5, 6, 10, 0.9), 0 0 0 4px rgba(255, 75, 92, 0.7);

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

  /* Layout */
  --container-max-width: 1120px;
  --container-padding-x: var(--space-5);

  /* Z-index scale */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 100;
  --z-modal: 1000;
}

/* ========================================================================== 
   Reset / Normalize
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
}

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

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%;
}

img {
  height: auto;
}

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

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

textarea {
  resize: vertical;
}

:where(a) {
  color: inherit;
}

:where(a, button) {
  cursor: pointer;
}

:where(a[disabled], button[disabled]) {
  cursor: not-allowed;
}

/* Remove default focus outlines – we re-add accessible styles below */
:focus {
  outline: none;
}

/* ========================================================================== 
   Base Styles
   ========================================================================== */

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  font-weight: var(--font-weight-regular);
  background-color: var(--color-background);
  color: var(--color-text);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(2rem, 3vw, 2.5rem);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  margin-bottom: var(--space-3);
}

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

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

h6 {
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

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

p + p {
  margin-top: calc(-1 * var(--space-2));
}

a {
  text-decoration: none;
  color: var(--color-primary);
  transition: color var(--transition-base), opacity var(--transition-base), transform var(--transition-fast);
}

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

a:active {
  transform: translateY(1px);
}

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

strong {
  font-weight: var(--font-weight-semibold);
}

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

hr {
  border: 0;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-8) 0;
}

/* ========================================================================== 
   Accessibility & Motion
   ========================================================================== */

:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

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

/* Layout - Container */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding-x);
  padding-right: var(--container-padding-x);
}

.container-full {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding-x);
  padding-right: var(--container-padding-x);
}

/* 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-5);
}

.gap-lg {
  gap: var(--space-8);
}

/* Grid Helpers */

.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);
  }
}

/* Spacing Utilities (margin / padding - key sizes only to stay light) */

.mt-0 { margin-top: 0 !important; }
.mt-xs { margin-top: var(--space-2) !important; }
.mt-sm { margin-top: var(--space-4) !important; }
.mt-md { margin-top: var(--space-6) !important; }
.mt-lg { margin-top: var(--space-10) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-xs { margin-bottom: var(--space-2) !important; }
.mb-sm { margin-bottom: var(--space-4) !important; }
.mb-md { margin-bottom: var(--space-6) !important; }
.mb-lg { margin-bottom: var(--space-10) !important; }

.pt-sm { padding-top: var(--space-4) !important; }
.pt-md { padding-top: var(--space-6) !important; }
.pt-lg { padding-top: var(--space-10) !important; }

.pb-sm { padding-bottom: var(--space-4) !important; }
.pb-md { padding-bottom: var(--space-6) !important; }
.pb-lg { padding-bottom: var(--space-10) !important; }

/* Text Utilities */

.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.text-muted { color: var(--color-text-muted) !important; }
.text-uppercase { text-transform: uppercase !important; }

/* 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;
}

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

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  background: var(--color-surface-soft);
  color: var(--color-text);
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-strong) 100%);
  border-color: transparent;
  box-shadow: 0 18px 40px rgba(255, 75, 92, 0.4);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 48px rgba(255, 75, 92, 0.6);
}

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

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

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

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.04);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn-icon {
  padding: 0.6rem;
  border-radius: var(--radius-pill);
}

/* Inputs & Form Controls */

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.field-description {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.input,
textarea,
select {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface-alt);
  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: rgba(164, 167, 179, 0.8);
}

.input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(255, 75, 92, 0.4);
}

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

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

/* Card Component */

.card {
  position: relative;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  background: radial-gradient(circle at top left, rgba(255, 75, 92, 0.12), transparent 55%),
              linear-gradient(145deg, var(--color-surface) 0%, #05060a 100%);
  border: 1px solid rgba(72, 79, 99, 0.6);
  box-shadow: var(--shadow-subtle);
  overflow: hidden;
}

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

.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);
}

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

.card-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

/* Media Wrapper (for hero / case study visuals) */

.media-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
}

.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame-gradient::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(5, 6, 10, 0.75) 0%, rgba(5, 6, 10, 0) 40%, rgba(5, 6, 10, 0.9) 100%);
  pointer-events: none;
}

/* Badges / Pills */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(15, 23, 42, 0.8);
  color: var(--color-text-muted);
}

.badge-primary {
  border-color: rgba(255, 75, 92, 0.6);
  background: rgba(255, 75, 92, 0.1);
  color: #ffd9de;
}

.badge-success {
  border-color: rgba(58, 210, 159, 0.6);
  background: var(--color-success-soft);
  color: #cff8e8;
}

/* Tag list (e.g., services, capabilities) */

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.24rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text-muted);
}

/* Subtle section frame for main vertical rhythm */

.section {
  padding-top: var(--space-14);
  padding-bottom: var(--space-14);
}

.section-muted {
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.04), transparent 50%),
              linear-gradient(to bottom, #05060a 0%, #05060a 40%, #05060a 100%);
}

@media (max-width: 768px) {
  :root {
    --container-padding-x: var(--space-4);
  }

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

/* End of base.css */