/* Art direction: Corporate IT company "Synthwave IT" → professional + bold neon
   Palette: dark navy base, neon cyan (#00f5ff) + magenta (#ff00c8) accents (light/neon on dark)
   Typography: Cabinet Grotesk (display) + Satoshi (body) — Fontshare
   Density: balanced */

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: none; text-size-adjust: none;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body {
  min-height: 100dvh; line-height: 1.6;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 0.3s ease, color 0.3s ease;
}
img, picture, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1,h2,h3,h4,h5,h6 { text-wrap: balance; line-height: 1.15; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }
button { cursor: pointer; background: none; border: none; }
table { border-collapse: collapse; width: 100%; }
a { text-decoration: none; }

::selection { background: oklch(from var(--color-primary) l c h / 0.3); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

/* ===== DESIGN TOKENS — DARK MODE (default) ===== */
:root, [data-theme="dark"] {
  /* Surfaces */
  --color-bg:             #080b14;
  --color-surface:        #0d1120;
  --color-surface-2:      #121829;
  --color-surface-offset: #17203a;
  --color-divider:        #1e2a45;
  --color-border:         #243050;

  /* Text */
  --color-text:           #e8eeff;
  --color-text-muted:     #8a9bc4;
  --color-text-faint:     #3a4a70;
  --color-text-inverse:   #080b14;

  /* Primary: Neon Cyan */
  --color-primary:        #00e5ff;
  --color-primary-hover:  #00c4db;
  --color-primary-active: #009fb3;
  --color-primary-glow:   rgba(0, 229, 255, 0.25);

  /* Accent: Neon Magenta */
  --color-accent:         #ff00c8;
  --color-accent-hover:   #d400a8;
  --color-accent-glow:    rgba(255, 0, 200, 0.2);

  /* Highlight: Electric Blue */
  --color-blue:           #4d7fff;
  --color-blue-glow:      rgba(77, 127, 255, 0.2);

  /* Semantic */
  --color-success:        #00e5a0;
  --color-error:          #ff4d6d;
  --color-warning:        #ffd60a;

  /* Shadows — neon-tinged */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  --shadow-neon-cyan: 0 0 20px rgba(0, 229, 255, 0.35), 0 0 60px rgba(0, 229, 255, 0.12);
  --shadow-neon-magenta: 0 0 20px rgba(255, 0, 200, 0.35), 0 0 60px rgba(255, 0, 200, 0.1);
  --shadow-neon-blue: 0 0 20px rgba(77, 127, 255, 0.3), 0 0 60px rgba(77, 127, 255, 0.1);

  /* Radius */
  --radius-sm: 0.375rem; --radius-md: 0.5rem;
  --radius-lg: 0.75rem;  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px; --content-default: 960px;
  --content-wide: 1200px; --content-full: 100%;
}

/* ===== LIGHT MODE ===== */
[data-theme="light"] {
  --color-bg:             #f0f4ff;
  --color-surface:        #ffffff;
  --color-surface-2:      #f5f8ff;
  --color-surface-offset: #e8eeff;
  --color-divider:        #d4dcf5;
  --color-border:         #c0ccee;

  --color-text:           #0d1020;
  --color-text-muted:     #4a5578;
  --color-text-faint:     #8a9bc4;
  --color-text-inverse:   #f0f4ff;

  --color-primary:        #006fa8;
  --color-primary-hover:  #005a88;
  --color-primary-active: #004568;
  --color-primary-glow:   rgba(0, 111, 168, 0.15);

  --color-accent:         #c000a0;
  --color-accent-hover:   #a00080;
  --color-accent-glow:    rgba(192, 0, 160, 0.12);

  --color-blue:           #2a5acc;
  --color-blue-glow:      rgba(42, 90, 204, 0.15);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-neon-cyan: 0 0 15px rgba(0, 111, 168, 0.2), 0 4px 20px rgba(0,0,0,0.1);
  --shadow-neon-magenta: 0 0 15px rgba(192, 0, 160, 0.18), 0 4px 20px rgba(0,0,0,0.1);
  --shadow-neon-blue: 0 0 15px rgba(42, 90, 204, 0.18), 0 4px 20px rgba(0,0,0,0.1);
}

/* ===== FLUID TYPE SCALE ===== */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);
}

/* ===== 4PX SPACING ===== */
:root {
  --space-1: 0.25rem; --space-2: 0.5rem;  --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem;  --space-8: 2rem;    --space-10: 2.5rem;
  --space-12: 3rem;   --space-16: 4rem;   --space-20: 5rem;   --space-24: 6rem;
}

/* ===== FONTS ===== */
:root {
  --font-display: 'Cabinet Grotesk', 'Inter', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;
}

/* ===== LAYOUT UTILITIES ===== */
.container { max-width: var(--content-wide); margin-inline: auto; padding-inline: var(--space-6); }
.container-default { max-width: var(--content-default); margin-inline: auto; padding-inline: var(--space-6); }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border-width:0; }

/* ===== NAVIGATION ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-smooth), border-color var(--transition-smooth);
}
.nav-logo {
  display: flex; align-items: center; gap: var(--space-3);
  font-family: var(--font-display); font-size: var(--text-lg); font-weight: 700;
  color: var(--color-text); text-decoration: none;
  transition: color var(--transition-interactive);
}
.nav-logo:hover { color: var(--color-primary); }
.nav-logo .logo-icon { flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: var(--space-8); list-style: none; }
.nav-links a {
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 500;
  color: var(--color-text-muted); text-decoration: none;
  position: relative; padding-block: var(--space-1);
  transition: color var(--transition-interactive);
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--color-primary);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition-smooth);
}
.nav-links a:hover, .nav-links a.active { color: var(--color-primary); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-actions { display: flex; align-items: center; gap: var(--space-3); }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; padding: var(--space-2); cursor: pointer; background: none; border: none; }
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--color-text); border-radius: var(--radius-full); transition: transform var(--transition-smooth), opacity var(--transition-smooth); }
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-mobile {
  display: none; position: fixed; inset: 0; z-index: 999;
  background: var(--color-bg); padding: calc(80px + var(--space-8)) var(--space-6) var(--space-6);
  flex-direction: column; gap: var(--space-6);
}
.nav-mobile.open { display: flex; }
.nav-mobile a { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; color: var(--color-text); text-decoration: none; padding: var(--space-3) 0; border-bottom: 1px solid var(--color-border); }
.nav-mobile a:hover { color: var(--color-primary); }

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  width: 40px; height: 40px; border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); border: 1px solid var(--color-border);
  background: var(--color-surface); cursor: pointer;
  transition: color var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); box-shadow: var(--shadow-neon-cyan); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6); border-radius: var(--radius-full);
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 600;
  cursor: pointer; border: none; text-decoration: none; white-space: nowrap;
  position: relative; overflow: hidden; transition: all var(--transition-interactive);
}
/* PRIMARY BUTTON — morphing gradient sweep + glow */
.btn-primary {
  background: var(--color-primary); color: #000;
  box-shadow: var(--shadow-neon-cyan);
}
.btn-primary::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.25) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-primary:hover::before { transform: translateX(100%); }
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 0 30px rgba(0,229,255,0.55), 0 0 80px rgba(0,229,255,0.2);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0); }
/* OUTLINE BUTTON — magnetic border pulse */
.btn-outline {
  background: transparent; color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit;
  background: var(--color-primary-glow);
  transform: scale(0); opacity: 0;
  transition: transform var(--transition-smooth), opacity var(--transition-smooth);
}
.btn-outline:hover::before { transform: scale(1); opacity: 1; }
.btn-outline:hover { box-shadow: var(--shadow-neon-cyan); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
/* GHOST BUTTON */
.btn-ghost {
  background: transparent; color: var(--color-text-muted);
  border: 1.5px solid var(--color-border);
}
.btn-ghost:hover { color: var(--color-text); border-color: var(--color-text-muted); transform: translateY(-1px); }
/* ACCENT BUTTON — magenta */
.btn-accent {
  background: var(--color-accent); color: #fff;
  box-shadow: var(--shadow-neon-magenta);
}
.btn-accent::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-accent:hover::before { transform: translateX(100%); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 0 30px rgba(255,0,200,0.5), 0 0 80px rgba(255,0,200,0.15); }
.btn-accent:active { transform: translateY(0); }
/* RIPPLE EFFECT */
.btn .ripple {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,0.3); transform: scale(0);
  animation: ripple-anim 0.6s linear;
  pointer-events: none;
}
@keyframes ripple-anim { to { transform: scale(4); opacity: 0; } }

/* ===== SECTION BASE ===== */
.section { padding-block: clamp(var(--space-12), 8vw, var(--space-24)); }
.section-header { text-align: center; margin-bottom: var(--space-12); }
.section-tag {
  display: inline-block; font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--color-primary);
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-full);
  border: 1px solid var(--color-primary); background: var(--color-primary-glow);
  margin-bottom: var(--space-4);
}
.section-title {
  font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 800;
  color: var(--color-text); margin-bottom: var(--space-4);
}
.section-title span { color: var(--color-primary); }
.section-desc { font-size: var(--text-base); color: var(--color-text-muted); max-width: 55ch; margin-inline: auto; }

/* ===== CARDS ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon-cyan);
  border-color: var(--color-primary);
}

/* ===== SCROLL REVEALS ===== */
.reveal {
  opacity: 1;
}
@supports (animation-timeline: scroll()) {
  .reveal {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 75%;
  }
  .reveal-delay-1 { animation-delay: 0.05s; }
  .reveal-delay-2 { animation-delay: 0.1s; }
  .reveal-delay-3 { animation-delay: 0.15s; }
}
@keyframes reveal-fade { to { opacity: 1; } }

/* ===== FLOATING PARTICLES (hero) ===== */
#particles-canvas {
  position: absolute; inset: 0; pointer-events: none; z-index: 1;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-surface); border-top: 1px solid var(--color-border);
  padding-block: var(--space-12);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-8); margin-bottom: var(--space-8); }
.footer-brand p { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-3); max-width: 36ch; }
.footer-col h4 { font-family: var(--font-display); font-size: var(--text-sm); font-weight: 700; color: var(--color-text); margin-bottom: var(--space-4); text-transform: uppercase; letter-spacing: 0.08em; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.footer-col ul a { font-size: var(--text-sm); color: var(--color-text-muted); text-decoration: none; transition: color var(--transition-interactive); }
.footer-col ul a:hover { color: var(--color-primary); }
.footer-bottom { border-top: 1px solid var(--color-border); padding-top: var(--space-6); display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }
.footer-bottom p { font-size: var(--text-xs); color: var(--color-text-faint); }
.social-links { display: flex; gap: var(--space-3); }
.social-links a {
  width: 36px; height: 36px; border-radius: var(--radius-full);
  border: 1px solid var(--color-border); display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); transition: all var(--transition-interactive);
}
.social-links a:hover { color: var(--color-primary); border-color: var(--color-primary); box-shadow: var(--shadow-neon-cyan); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .container, .container-default { padding-inline: var(--space-4); }
  .footer-grid { grid-template-columns: 1fr; }
}

/* ===== NEON TEXT EFFECT ===== */
.neon-text {
  color: var(--color-primary);
  text-shadow: 0 0 10px var(--color-primary-glow), 0 0 30px var(--color-primary-glow);
}

/* ===== BADGE / CHIP ===== */
.badge {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.04em;
}
.badge-primary { background: var(--color-primary-glow); color: var(--color-primary); border: 1px solid oklch(from var(--color-primary) l c h / 0.3); }
.badge-accent  { background: var(--color-accent-glow);   color: var(--color-accent);   border: 1px solid oklch(from var(--color-accent) l c h / 0.3); }
.badge-blue    { background: var(--color-blue-glow);     color: var(--color-blue);     border: 1px solid oklch(from var(--color-blue) l c h / 0.3); }

/* ===== STAT COUNTER ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.stat-card { text-align: center; padding: var(--space-6); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); }
.stat-number { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 800; color: var(--color-primary); line-height: 1; margin-bottom: var(--space-2); }
.stat-label { font-size: var(--text-sm); color: var(--color-text-muted); }
@media (max-width: 640px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }

/* ===== FORM ===== */
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-group label { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); }
.form-input, .form-textarea, .form-select {
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-lg);
  border: 1.5px solid var(--color-border); background: var(--color-surface-2);
  color: var(--color-text); font-size: var(--text-base);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--color-text-faint); }
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}
.form-textarea { resize: vertical; min-height: 140px; }
.form-error { font-size: var(--text-xs); color: var(--color-error); display: none; }
.form-group.has-error .form-input,
.form-group.has-error .form-textarea { border-color: var(--color-error); }
.form-group.has-error .form-error { display: block; }

/* ===== PAGE HERO (inner pages) ===== */
.page-hero {
  padding-top: calc(80px + var(--space-16));
  padding-bottom: var(--space-16);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 100%, var(--color-primary-glow) 0%, transparent 65%);
  pointer-events: none;
}
.page-hero-tag { margin-bottom: var(--space-4); }
.page-hero h1 { font-family: var(--font-display); font-size: var(--text-3xl); font-weight: 800; margin-bottom: var(--space-4); }
.page-hero p { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 55ch; margin-inline: auto; }

/* ===== TYPING CURSOR ===== */
.typing-cursor::after {
  content: '|'; color: var(--color-primary); animation: blink 0.8s step-end infinite;
}
@keyframes blink { 0%,100% { opacity:1; } 50% { opacity:0; } }

/* ===== VIEW TRANSITIONS ===== */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: fade-out 0.2s cubic-bezier(0.4, 0, 1, 1); }
::view-transition-new(root) { animation: fade-in 0.3s cubic-bezier(0.16, 1, 0.3, 1); }
@keyframes fade-out { to { opacity: 0; } }
@keyframes fade-in { from { opacity: 0; } }