/* ============================================================
   MS STUDIO — DESIGN SYSTEM
   Brand Guidelines 2026 | Dark Mode | Electric Cyan
   ============================================================ */

/* --- FONTS --- */
@font-face {
  font-family: 'Eurostile';
  src: url('/fonts/eurostile/EurostileExtendedBlack.ttf') format('truetype');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'DarkerGrotesque';
  src: url('/fonts/grotesque/DarkerGrotesque-Light.ttf') format('truetype');
  font-weight: 300;
  font-display: swap;
}
@font-face {
  font-family: 'DarkerGrotesque';
  src: url('/fonts/grotesque/DarkerGrotesque-Regular.ttf') format('truetype');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'DarkerGrotesque';
  src: url('/fonts/grotesque/DarkerGrotesque-Medium.ttf') format('truetype');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: 'DarkerGrotesque';
  src: url('/fonts/grotesque/DarkerGrotesque-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: 'DarkerGrotesque';
  src: url('/fonts/grotesque/DarkerGrotesque-Bold.ttf') format('truetype');
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: 'DarkerGrotesque';
  src: url('/fonts/grotesque/DarkerGrotesque-ExtraBold.ttf') format('truetype');
  font-weight: 800;
  font-display: swap;
}
@font-face {
  font-family: 'DarkerGrotesque';
  src: url('/fonts/grotesque/DarkerGrotesque-Black.ttf') format('truetype');
  font-weight: 900;
  font-display: swap;
}

/* --- CSS TOKENS --- */
:root {
  /* Colors */
  --bg-primary:       #0c0d0d;
  --bg-surface:       #161819;
  --bg-surface-2:     #1e2022;
  --accent:           #54c3ea;
  --accent-light:     #9fedff;
  --accent-dark:      #2a8fb0;
  --accent-glow:      rgba(84, 195, 234, 0.35);
  --accent-border:    rgba(84, 195, 234, 0.2);
  --accent-border-2:  rgba(84, 195, 234, 0.45);
  --text-primary:     #ffffff;
  --text-muted:       #d6d6d6;
  --text-dim:         #8a9ba8;
  --error:            #ff5c5c;
  --success:          #54c3ea;

  /* Typography */
  --font-heading:     'Eurostile', 'Arial Black', sans-serif;
  --font-body:        'DarkerGrotesque', 'Arial', sans-serif;

  /* Spacing */
  --section-padding:  120px 0;
  --container-max:    1200px;
  --container-px:     clamp(20px, 5vw, 60px);

  /* Radius */
  --radius-sm:        8px;
  --radius-md:        16px;
  --radius-lg:        24px;
  --radius-xl:        32px;

  /* Shadows / Glows */
  --glow-sm:          0 0 12px rgba(84, 195, 234, 0.3);
  --glow-md:          0 0 24px rgba(84, 195, 234, 0.4);
  --glow-lg:          0 0 48px rgba(84, 195, 234, 0.35);
  --shadow-card:      0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card-hover:0 8px 40px rgba(0, 0, 0, 0.6);

  /* Transitions */
  --transition-fast:  0.15s ease;
  --transition-base:  0.3s ease;
  --transition-slow:  0.5s ease;

  /* Navbar */
  --navbar-height:    72px;
}

/* --- RESET --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font-body);
}

ul, ol {
  list-style: none;
}

/* --- LAYOUT UTILITIES --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
}

.section {
  padding: var(--section-padding);
}

/* --- TYPOGRAPHY SCALE --- */
.heading-display {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.heading-xl {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.heading-lg {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.heading-md {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1rem, 2vw, 1.5rem);
  line-height: 1.2;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.body-lg {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-muted);
}

.body-md {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.65;
  color: var(--text-muted);
}

.label {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
  box-shadow: var(--glow-sm);
}

.btn-primary:hover {
  background: var(--accent-light);
  box-shadow: var(--glow-md);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: rgba(0, 0, 0, 0.3);
  color: var(--accent);
  border: 1px solid var(--accent-border-2);
}

.btn-outline:hover {
  background: rgba(84, 195, 234, 0.08);
  border-color: var(--accent);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-lg {
  padding: 18px 44px;
  font-size: 0.85rem;
}

.btn-sm {
  padding: 10px 22px;
  font-size: 0.7rem;
}

/* --- CARDS --- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, rgba(84,195,234,0.04) 0%, transparent 60%);
  pointer-events: none;
}

.card:hover {
  border-color: var(--accent-border-2);
  box-shadow: var(--glow-sm), var(--shadow-card-hover);
  transform: translateY(-4px);
}

/* --- SECTION LABEL --- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--accent);
  display: inline-block;
}

/* --- ACCENT LINE --- */
.accent-line {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  border-radius: 2px;
  margin: 16px 0;
  box-shadow: var(--glow-sm);
}

/* --- SCROLLBAR --- */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--accent-border-2);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* --- SELECTION --- */
::selection {
  background: rgba(84, 195, 234, 0.3);
  color: var(--text-primary);
}

/* --- GEOMETRIC BACKGROUND PATTERN --- */
.geo-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.geo-bg svg {
  position: absolute;
  opacity: 0.04;
}

/* --- CYAN GLOW ORBS (decorative) --- */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.glow-orb-cyan {
  background: radial-gradient(circle, rgba(84, 195, 234, 0.25) 0%, transparent 70%);
}

/* --- FOCUS STYLES (Accessibility) --- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  :root {
    --section-padding: 80px 0;
    --navbar-height: 64px;
  }

  .btn-lg {
    padding: 16px 32px;
  }
}

@media (max-width: 480px) {
  :root {
    --section-padding: 60px 0;
  }
}