/* ============================================================
   SHLOKA JAYWANT — DESIGN SYSTEM
   Palette: Neutral modern + cool accents
   Typography: Fraunces (display) + DM Mono (labels) + Lora (body)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,600;0,9..144,700;1,9..144,300;1,9..144,400&family=Lora:ital,wght@0,400;0,500;1,400&family=DM+Mono:wght@300;400;500&display=swap');

/* ---- TOKENS ---- */
:root {
  --bg:       #f4f7fb;
  --bg2:      #ecf1f8;
  --surface:  #ffffff;
  --border:   #d5deea;
  --border2:  #bfcddd;
  --text:     #17171a;
  --text2:    #2f3746;
  --text3:    #647189;
  --text4:    #8b97aa;
  --accent:   #2563eb;
  --accent2:  #7c3aed;
  --accent-l: rgba(37,99,235,.08);
  --accent-l2:rgba(37,99,235,.16);
  --nav-bg:   rgba(244,247,251,.94);
  --serif:    'Fraunces', Georgia, serif;
  --mono:     'DM Mono', 'Courier New', monospace;
  --body:     'Lora', Georgia, serif;
  --radius:   6px;
  --shadow:   0 1px 3px rgba(0,0,0,.07), 0 4px 16px rgba(0,0,0,.05);
  --shadow2:  0 2px 8px rgba(0,0,0,.1), 0 12px 32px rgba(0,0,0,.07);
}

[data-theme="dark"] {
  --bg:       #0c111b;
  --bg2:      #141b28;
  --surface:  #111827;
  --border:   #223047;
  --border2:  #334864;
  --text:     #e5e7eb;
  --text2:    #c6cfdd;
  --text3:    #96a3b8;
  --text4:    #73829c;
  --accent:   #38bdf8;
  --accent2:  #a78bfa;
  --accent-l: rgba(56,189,248,.12);
  --accent-l2:rgba(56,189,248,.24);
  --nav-bg:   rgba(12,17,27,.9);
  --shadow:   0 1px 3px rgba(0,0,0,.25), 0 8px 24px rgba(0,0,0,.28);
  --shadow2:  0 2px 10px rgba(0,0,0,.35), 0 14px 32px rgba(0,0,0,.35);
}

/* ---- RESET ---- */
*, *::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(--body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color .2s ease, color .2s ease;
}

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ---- TYPOGRAPHY ---- */
h1, h2, h3, h4, h5 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--text);
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 400; }
h3 { font-size: 1.2rem; font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; font-family: var(--mono); letter-spacing: 0.04em; }

p { color: var(--text2); line-height: 1.8; }

a { color: var(--accent); text-decoration: none; transition: opacity 0.15s; }
a:hover { opacity: 0.7; }

strong { font-weight: 500; color: var(--text); }

/* ---- LAYOUT ---- */
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }
.wrap--narrow { max-width: 720px; margin: 0 auto; padding: 0 2rem; }

/* ---- LABEL (mono eyebrow) ---- */
.label {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text3);
}

.label--accent { color: var(--accent); }

/* ---- DIVIDER ---- */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}

/* ---- BUTTON ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid currentColor;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  text-decoration: none;
  line-height: 1;
}

.btn--primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn--primary:hover { background: var(--accent); border-color: var(--accent); opacity: 1; }

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border2);
}
.btn--ghost:hover { background: var(--bg2); border-color: var(--text); opacity: 1; }

/* ---- NAV ---- */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: 60px;
  display: flex; align-items: center;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}

.site-nav.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border-color: var(--border);
}

.site-nav .wrap {
  width: 100%;
  max-width: 1100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.03em;
  text-decoration: none;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
  transition: color 0.15s;
}

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

.nav-cta {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-l2);
  background: var(--accent-l);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius);
  transition: background 0.2s;
}

.nav-cta:hover { background: var(--accent-l2); opacity: 1; }

.nav-utility {
  display: flex;
  align-items: center;
  gap: .8rem;
}

.theme-toggle {
  width: 44px;
  height: 24px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  position: relative;
  transition: background 0.3s, border-color 0.3s;
  flex-shrink: 0;
}

[data-theme="light"] .theme-toggle-knob {
  transform: translateX(20px);
}

.theme-toggle-knob {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform 0.3s ease, background 0.3s;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  line-height: 1;
  transform-origin: center;
}

.theme-toggle-knob span {
  display: inline-block;
  transform: translateX(0);
}

.theme-toggle-knob .sun {
  transform: translateX(1px);
}

.toggle-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text4);
  letter-spacing: 0.05em;
}

/* ---- FOOTER ---- */
.site-footer {
  margin-top: 6rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-left {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text4);
  letter-spacing: 0.06em;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---- REVEAL ---- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ---- TAG ---- */
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text3);
}

.tag--accent {
  background: var(--accent-l);
  border-color: var(--accent-l2);
  color: var(--accent);
}

/* ---- CARD ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.8rem;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.card:hover {
  box-shadow: var(--shadow);
  border-color: var(--border2);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 700px) {
  .wrap, .wrap--narrow { padding: 0 2.2rem; }
  .nav-links { display: none; }
  .theme-toggle { font-size: .58rem; }
  .site-footer .wrap { flex-direction: column; align-items: flex-start; }
}

/* ---- HAMBURGER / MOBILE NAV ---- */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
  transition: border-color 0.2s;
  flex-shrink: 0;
}
.nav-hamburger:hover { border-color: var(--accent); }
.nav-hamburger span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform-origin: center;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-mobile-menu {
  display: none;
  position: fixed;
  top: 60px;
  left: 0; right: 0;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 199;
  padding: 1rem 1.5rem 1.5rem;
  flex-direction: column;
  gap: 0;
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu li {
  list-style: none;
  border-bottom: 1px solid var(--border);
}
.nav-mobile-menu li:last-child { border-bottom: none; }
.nav-mobile-menu li a {
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text2);
  padding: 0.85rem 0;
  transition: color 0.15s;
  text-decoration: none;
}
.nav-mobile-menu li a:hover { color: var(--accent); opacity: 1; }

@media (max-width: 700px) {
  .nav-hamburger { display: flex; }
  .nav-links { display: none !important; }
}