/* ============================================================
   MOHIT GAIKWAD — PORTFOLIO
   Global Design System
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- CSS Custom Properties --- */
:root {
  --bg:           #0D0F14;
  --surface:      #13161D;
  --surface-2:    #181B24;
  --border:       #1E2330;
  --border-hover: #2A3047;
  --accent:       #00C2A8;
  --accent-dim:   rgba(0, 194, 168, 0.12);
  --accent-glow:  rgba(0, 194, 168, 0.25);
  --text:         #E8ECF4;
  --text-muted:   #6B7280;
  --text-dim:     #9CA3AF;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --radius:       8px;
  --radius-lg:    14px;
  --transition:   200ms cubic-bezier(0.4, 0, 0.2, 1);
  --nav-h:        64px;
}

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

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

/* ============================================================
   NAVIGATION
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(13, 15, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: border-color var(--transition);
}

.nav__inner {
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  letter-spacing: -0.3px;
}

.nav__logo span {
  color: var(--accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
  padding-bottom: 2px;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 1px;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--text);
}

.nav__links a.active::after,
.nav__links a:hover::after {
  transform: scaleX(1);
}

.nav__cta {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--bg) !important;
  background: var(--accent);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition) !important;
}

.nav__cta:hover {
  background: #00dabe !important;
  box-shadow: 0 0 20px var(--accent-glow) !important;
  transform: translateY(-1px) !important;
  color: var(--bg) !important;
}

.nav__cta::after { display: none !important; }

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* Mobile Overlay */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
}

.nav__mobile.open { display: flex; }

.nav__mobile a {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav__mobile a:hover,
.nav__mobile a.active { color: var(--accent); }

.nav__mobile-close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.75rem;
  cursor: pointer;
  transition: color var(--transition);
}

.nav__mobile-close:hover { color: var(--accent); }

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

.section--tight {
  padding: 4rem 0;
}

.section__header {
  margin-bottom: 3.5rem;
}

.section__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}

.section__subtitle {
  margin-top: 0.75rem;
  color: var(--text-muted);
  max-width: 560px;
}

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 300ms ease, transform 300ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg);
}

.btn--primary:hover {
  background: #00dabe;
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-hover);
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ============================================================
   TAGS
   ============================================================ */

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(0, 194, 168, 0.2);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  white-space: nowrap;
}

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

/* ============================================================
   CARDS
   ============================================================ */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  transform: translateY(-2px);
}

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

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer__left {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-muted);
}

.footer__left span { color: var(--accent); }

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  color: var(--text-muted);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color var(--transition);
}

.footer__links a:hover { color: var(--accent); }

.footer__links svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */

@media (max-width: 768px) {
  :root { --nav-h: 56px; }

  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .section { padding: 4rem 0; }
  .container { padding: 0 1.25rem; }

  .footer__inner { flex-direction: column; align-items: flex-start; }
}