/* ========================================================================
   Variables
   ======================================================================== */
:root {
  /* Colors */
  --color-background: #050609; /* deep near-black */
  --color-surface: #0d0f14;
  --color-surface-elevated: #151823;
  --color-text: #f7f7fb;
  --color-text-muted: #b3b7c7;

  --color-primary: #316bff; /* electric blue */
  --color-primary-soft: rgba(49, 107, 255, 0.12);
  --color-magenta: #e00087; /* bold magenta */
  --color-orange: #ff7a1a;
  --color-success: #1ac29a;
  --color-warning: #ffcc33;
  --color-danger: #ff3154;

  --color-border-subtle: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.24);

  /* Neutral grays (for light sections or overlays) */
  --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, "SF Pro Text",
    "Roboto", "Segoe UI", sans-serif;
  --font-display: "Poppins", "Manrope", system-ui, -apple-system,
    BlinkMacSystemFont, "SF Pro Text", "Roboto", "Segoe UI", sans-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: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-4: 0.25rem;  /* 4px */
  --space-8: 0.5rem;   /* 8px */
  --space-12: 0.75rem; /* 12px */
  --space-16: 1rem;    /* 16px */
  --space-20: 1.25rem; /* 20px */
  --space-24: 1.5rem;  /* 24px */
  --space-32: 2rem;    /* 32px */
  --space-40: 2.5rem;  /* 40px */
  --space-48: 3rem;    /* 48px */
  --space-56: 3.5rem;  /* 56px */
  --space-64: 4rem;    /* 64px */
  --space-80: 5rem;    /* 80px */
  --space-96: 6rem;    /* 96px */

  /* Radius */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 18px;
  --radius-pill: 999px;

  /* Shadows (bold, modern) */
  --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 18px 40px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 26px 80px rgba(0, 0, 0, 0.7);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 200ms cubic-bezier(0.19, 1, 0.22, 1);
  --transition-slow: 320ms cubic-bezier(0.19, 1, 0.22, 1);

  /* Layout */
  --layout-max-width: 1200px;
  --layout-max-width-wide: 1440px;
}

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

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
}

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

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

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

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

button, input, textarea, select {
  margin: 0;
  font: inherit;
  color: inherit;
}

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

textarea {
  resize: vertical;
}

:root {
  color-scheme: dark light;
}

/* ========================================================================
   Base Styles
   ======================================================================== */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  background-color: var(--color-background);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: var(--line-height-tight);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-5xl));
  margin-bottom: var(--space-16);
}

h2 {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  margin-bottom: var(--space-12);
}

h3 {
  font-size: clamp(var(--font-size-xl), 2.4vw, var(--font-size-3xl));
  margin-bottom: var(--space-8);
}

h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-8);
}

h5 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-4);
}

h6 {
  font-size: var(--font-size-md);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: var(--space-4);
}

p {
  margin-bottom: var(--space-16);
  color: var(--color-text-muted);
}

p:last-child {
  margin-bottom: 0;
}

strong {
  font-weight: 600;
}

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

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

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

::selection {
  background: rgba(224, 0, 135, 0.7);
  color: #ffffff;
}

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

:focus:not(:focus-visible) {
  outline: none;
}

@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
   ======================================================================== */
.container {
  width: 100%;
  max-width: var(--layout-max-width);
  margin-inline: auto;
  padding-inline: var(--space-16);
}

.container--wide {
  max-width: var(--layout-max-width-wide);
}

.section {
  padding-block: clamp(var(--space-48), 8vh, var(--space-96));
}

.section--contrast {
  background: radial-gradient(circle at 0 0, rgba(49, 107, 255, 0.24), transparent 55%),
              radial-gradient(circle at 100% 100%, rgba(224, 0, 135, 0.16), transparent 55%),
              var(--color-surface);
}

/* Flex utilities */
.flex {
  display: flex;
}

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

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

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

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

.gap-xs { gap: var(--space-8); }
.gap-sm { gap: var(--space-12); }
.gap-md { gap: var(--space-16); }
.gap-lg { gap: var(--space-24); }
.gap-xl { gap: var(--space-32); }

/* Grid utilities */
.grid {
  display: grid;
  gap: var(--space-24);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-32);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-32);
}

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

/* Alignment & text */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

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

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

/* 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
   ======================================================================== */
/* Button base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding-inline: var(--space-20);
  padding-block: 0.7rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    opacity var(--transition-fast);
  will-change: transform, box-shadow;
}

.btn-primary {
  background: linear-gradient(120deg, var(--color-primary), var(--color-magenta));
  color: #ffffff!important;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px) scale(1.01);
  box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0) scale(0.99);
  box-shadow: var(--shadow-sm);
}

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

.btn-outline:hover:not(:disabled) {
  border-color: var(--color-primary);
  background-color: rgba(49, 107, 255, 0.08);
}

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

.btn-ghost:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.04);
}

.btn-sm {
  padding-inline: var(--space-16);
  padding-block: 0.55rem;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding-inline: var(--space-24);
  padding-block: 0.85rem;
  font-size: var(--font-size-md);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
  transform: none;
}

.btn:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 3px;
}

/* Inputs */
.input,
select,
textarea {
  width: 100%;
  padding-inline: var(--space-16);
  padding-block: 0.7rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(5, 6, 9, 0.9);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
}

.input::placeholder,
textarea::placeholder {
  color: rgba(179, 183, 199, 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-soft);
  background-color: rgba(13, 15, 20, 0.96);
}

.input--error {
  border-color: var(--color-danger);
}

.input--error:focus-visible {
  box-shadow: 0 0 0 1px rgba(255, 49, 84, 0.45);
}

/* Cards (for portfolio, case studies, testimonials) */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.02), rgba(10, 12, 20, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-sm);
  padding: var(--space-24);
  overflow: hidden;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    background var(--transition-base);
}

.card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 0 0, rgba(49, 107, 255, 0.18), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 255, 255, 0.16);
}

.card:hover::before {
  opacity: 1;
}

.card--highlight {
  border-color: rgba(224, 0, 135, 0.6);
}

.card-header {
  margin-bottom: var(--space-16);
}

.card-title {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  line-height: var(--line-height-snug);
}

.card-meta {
  margin-top: var(--space-8);
  font-size: var(--font-size-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

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

.card-footer {
  margin-top: var(--space-20);
  flex-wrap: wrap;
  gap: var(--space-12);
}

/* Badges (e.g., campaign status, KPIs) */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: var(--space-12);
  padding-block: 0.25rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
}

.badge-primary {
  background-color: rgba(49, 107, 255, 0.12);
  border-color: rgba(49, 107, 255, 0.7);
  color: #d0ddff;
}

.badge-magenta {
  background-color: rgba(224, 0, 135, 0.12);
  border-color: rgba(224, 0, 135, 0.7);
  color: #ffd8f0;
}

.badge-success {
  background-color: rgba(26, 194, 154, 0.12);
  border-color: rgba(26, 194, 154, 0.7);
  color: #d7fff3;
}

/* Hero headline accent for dynamic look */
.heading-accent {
  display: inline-block;
  position: relative;
}

.heading-accent::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3em;
  width: 40%;
  height: 3px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-magenta), var(--color-orange));
}

/* Testimonials / quote styling */
.quote {
  position: relative;
  padding-left: var(--space-24);
  border-left: 2px solid rgba(255, 255, 255, 0.18);
  font-style: italic;
  color: var(--color-text-muted);
}

.quote::before {
  content: "\201C";
  position: absolute;
  left: 0.1rem;
  top: -0.9rem;
  font-size: 3rem;
  opacity: 0.12;
}

/* Tagline / eyebrow label */
.eyebrow {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-orange);
}

/* Responsive tweaks */
@media (max-width: 640px) {
  .section {
    padding-block: var(--space-48);
  }

  h1 {
    line-height: var(--line-height-snug);
  }

  .btn {
    width: auto;
  }
}