/* =========================================================================
   APPSOLUX — Visual replica of kushagrawal.in
   ========================================================================= */
:root {
  --dark: #0a0a0a;
  --dark2: #111;
  --light: #f8f8f8;
  --white: #fff;
  --gray1: #e8e8e8;
  --gray2: #c0c0c0;
  --gray3: #888;
  --gray4: #555;
  --gray5: #333;
  --accent: #4a6cf7;
  --font: "Inter", system-ui, sans-serif;
  --serif: "Playfair Display", Georgia, serif;
  --maxw: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
::selection { background: var(--accent); color: #fff; }
html { scroll-behavior: smooth; }
body { background: var(--dark); color: var(--dark); font-family: var(--font); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }
@media(max-width:700px){ .container { padding: 0 20px; } }

/* ====== Splash ====== */
.splash {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--dark);
  display: grid; place-items: center;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
.splash.hide { opacity: 0; visibility: hidden; }
.splash-word {
  font-family: var(--serif);
  font-size: clamp(36px, 8vw, 72px);
  color: var(--gray3);
  font-weight: 400;
  animation: fadeWord 0.6s ease;
}
@keyframes fadeWord { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* ====== Nav (liquid glass) ====== */
.nav {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  z-index: 200; width: calc(100% - 48px); max-width: 1260px;
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 12px 12px 24px;
  background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.05) 100%);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-radius: 60px;
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow:
    0 8px 32px rgba(0,0,0,0.12),
    inset 0 1px 0 rgba(255,255,255,0.2),
    inset 0 -1px 0 rgba(255,255,255,0.05);
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}
/* When scrolled past hero into light sections */
.nav-inner.on-light {
  background: linear-gradient(135deg, rgba(255,255,255,0.65) 0%, rgba(255,255,255,0.4) 100%);
  border-color: rgba(255,255,255,0.35);
  box-shadow:
    0 8px 32px rgba(0,0,0,0.06),
    inset 0 1px 0 rgba(255,255,255,0.5),
    inset 0 -1px 0 rgba(255,255,255,0.1);
}
}
.nav-brand {
  font-family: var(--font);
  font-size: 16px; font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--white);
  transition: color 0.4s ease;
}
.nav-inner.on-light .nav-brand { color: var(--dark); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  font-size: 13px; color: rgba(255,255,255,0.7);
  letter-spacing: 0.02em; transition: color 0.3s ease;
  font-weight: 400;
}
.nav-links a:hover { color: var(--white); }
.nav-inner.on-light .nav-links a { color: var(--gray4); }
.nav-inner.on-light .nav-links a:hover { color: var(--dark); }
.nav-links a span { color: var(--gray3); margin-right: 4px; font-size: 11px; }
.nav-hamburger {
  width: 48px; height: 48px;
  background: var(--dark);
  border-radius: 50%;
  display: none;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-hamburger span { display: block; width: 18px; height: 1.5px; background: #fff; transition: transform 0.3s ease, opacity 0.3s ease; }
.nav-hamburger.open span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav-hamburger.open span:last-child { transform: translateY(-3.25px) rotate(-45deg); }
@media(max-width:900px){
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}

/* Mobile menu */
.mobile-menu {
  position: fixed; inset: 0; z-index: 190;
  background: var(--dark);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu-links { display: flex; flex-direction: column; gap: 16px; }
.mobile-menu-links a {
  font-family: var(--serif);
  font-size: clamp(40px, 10vw, 80px);
  color: var(--white);
  font-weight: 400; letter-spacing: -0.02em;
  display: flex; align-items: baseline; gap: 20px;
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.2s ease;
}
.mobile-menu.open .mobile-menu-links a { opacity: 1; transform: translateY(0); }
.mobile-menu.open .mobile-menu-links a:nth-child(1){ transition-delay: 0.1s; }
.mobile-menu.open .mobile-menu-links a:nth-child(2){ transition-delay: 0.15s; }
.mobile-menu.open .mobile-menu-links a:nth-child(3){ transition-delay: 0.2s; }
.mobile-menu.open .mobile-menu-links a:nth-child(4){ transition-delay: 0.25s; }
.mobile-menu.open .mobile-menu-links a:nth-child(5){ transition-delay: 0.3s; }
.mobile-menu.open .mobile-menu-links a:nth-child(6){ transition-delay: 0.35s; }
.mobile-menu-links a:hover { color: var(--accent); }
.mm-num { font-family: var(--font); font-size: 14px; color: var(--gray4); }

/* ====== Hero (dark) - logo as full background ====== */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--dark);
  display: flex; flex-direction: column;
  align-items: center; justify-content: flex-end;
  overflow: hidden;
  padding: 100px 32px 80px;
  color: var(--white);
}
/* Logo covers the entire hero as background */
.hero-bg-logo {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid; place-items: center;
  pointer-events: none;
}
.hero-bg-logo img {
  width: 75%;
  max-width: 900px;
  height: auto;
  object-fit: contain;
  opacity: 0.6;
  filter: drop-shadow(0 0 120px rgba(100,160,255,0.15));
  animation: floatLogo 6s ease-in-out infinite;
}
@keyframes floatLogo { 0%,100%{ transform: translateY(0); } 50%{ transform: translateY(-12px); } }

.hero-info {
  position: relative; z-index: 3;
  text-align: center;
  padding-bottom: 20px;
}
.hero-label {
  font-size: 12px; letter-spacing: 0.15em;
  color: var(--gray3); text-transform: uppercase;
  display: block; margin-bottom: 14px;
}
.hero-tagline {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 400; letter-spacing: -0.02em;
  line-height: 1.2;
}
.hero-tagline em { font-style: italic; }



/* ====== Bio ====== */
.bio-section {
  background: var(--light);
  padding: 100px 0;
  text-align: center;
}
.bio-text {
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--gray4);
  line-height: 1.8;
  max-width: 900px;
  margin: 0 auto;
  font-weight: 300;
}

/* ====== Section light base ====== */
.section-light {
  background: var(--light);
  padding: 100px 0 120px;
  color: var(--dark);
}
.section-label {
  display: block;
  font-size: 12px; letter-spacing: 0.15em;
  color: var(--gray3);
  text-transform: uppercase;
  margin-bottom: 16px;
  text-align: center;
}
.section-heading {
  font-family: var(--serif);
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 400;
  letter-spacing: -0.03em;
  text-align: center;
  line-height: 1;
  margin-bottom: 72px;
  color: var(--dark);
}

/* ====== Experience / Service cards (like original) ====== */
.experience-list { display: flex; flex-direction: column; gap: 0; }
.exp-card {
  display: flex; gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  align-items: flex-start;
}
.exp-card:first-child { border-top: 1px solid rgba(0,0,0,0.08); }
.exp-icon {
  width: 48px; height: 48px; min-width: 48px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid rgba(0,0,0,0.06);
  display: grid; place-items: center;
  font-size: 22px;
}
.exp-content { flex: 1; }
.exp-top { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin-bottom: 8px; flex-wrap: wrap; }
.exp-top h3 { font-family: var(--font); font-size: 18px; font-weight: 500; }
.exp-date { font-size: 13px; color: var(--gray3); white-space: nowrap; }
.exp-content p { color: var(--gray4); font-size: 14px; margin-bottom: 14px; max-width: 700px; }
.exp-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.exp-tags span {
  font-size: 11px; padding: 4px 12px;
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 50px; color: var(--gray4);
  letter-spacing: 0.03em;
}

/* ====== Projects accordion (replica) ====== */
.projects-accordion { border-top: 1px solid rgba(0,0,0,0.1); }
.proj-item { border-bottom: 1px solid rgba(0,0,0,0.1); }
.proj-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 28px 0;
  cursor: pointer;
  transition: padding 0.3s ease;
}
.proj-header:hover { padding-left: 8px; }
.proj-name {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 400;
  letter-spacing: -0.02em;
  transition: color 0.2s ease;
}
.proj-header:hover .proj-name { color: var(--accent); }
.proj-header-right { display: flex; align-items: center; gap: 20px; }
.proj-cat { font-size: 13px; color: var(--gray3); }
.proj-toggle {
  width: 32px; height: 32px;
  border: 1px solid rgba(0,0,0,0.15);
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 18px; color: var(--gray4);
  transition: transform 0.3s ease, background 0.3s ease;
}
.proj-item.open .proj-toggle { transform: rotate(45deg); background: var(--dark); color: #fff; }

.proj-body {
  max-height: 0; overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
  padding: 0;
}
.proj-item.open .proj-body { max-height: 600px; padding: 0 0 40px; }

.proj-body-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 32px; margin-bottom: 32px; flex-wrap: wrap; }
.proj-body-top h4 { font-family: var(--serif); font-size: 24px; font-weight: 400; margin-bottom: 8px; opacity: 0.4; }
.proj-desc { color: var(--gray4); max-width: 560px; font-size: 14px; }
.proj-buttons { display: flex; gap: 12px; flex-wrap: wrap; }
.proj-btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.08em;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}
.proj-btn.filled { background: var(--dark); color: #fff; }
.proj-btn.filled:hover { background: var(--accent); transform: translateY(-2px); }
.proj-btn.outline { border: 1px solid rgba(0,0,0,0.15); color: var(--dark); }
.proj-btn.outline:hover { background: var(--dark); color: #fff; }

.proj-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid rgba(0,0,0,0.06);
  padding-top: 24px;
}
.proj-stats .stat strong {
  display: block;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 300; letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.proj-stats .stat span { font-size: 10px; letter-spacing: 0.1em; color: var(--gray3); text-transform: uppercase; }

.view-btn {
  display: inline-block;
  padding: 16px 40px;
  border: 1px solid rgba(0,0,0,0.15);
  border-radius: 50px;
  font-size: 13px; font-weight: 500;
  letter-spacing: 0.04em;
  transition: background 0.25s ease, color 0.25s ease;
}
.view-btn:hover { background: var(--dark); color: #fff; }

/* ====== Skills grid (4 columns with icons like original) ====== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 20px;
  overflow: hidden;
  background: var(--white);
}
@media(max-width:800px){ .skills-grid { grid-template-columns: repeat(2, 1fr); } }

.skill-col { border-right: 1px solid rgba(0,0,0,0.06); padding: 0; }
.skill-col:last-child { border-right: none; }
.skill-col-head {
  display: flex; align-items: center; gap: 12px;
  padding: 20px 24px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.skill-num { font-size: 12px; color: var(--accent); font-weight: 500; }
.skill-cat-name { font-size: 14px; font-weight: 500; }
.skill-row {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 24px;
  font-size: 14px; color: var(--gray4);
  border-bottom: 1px solid rgba(0,0,0,0.03);
  transition: background 0.2s ease;
}
.skill-row:last-child { border-bottom: none; }
.skill-row:hover { background: rgba(74,108,247,0.04); }
.skill-row img { width: 28px; height: 28px; object-fit: contain; }

/* ====== Why us (publications-style layout) ====== */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.why-left { position: sticky; top: 120px; }
.why-intro { font-size: 15px; color: var(--gray4); margin-bottom: 32px; line-height: 1.7; }
.why-author { font-family: var(--serif); font-size: 24px; font-style: italic; margin-bottom: 20px; }
.why-quote {
  font-family: var(--serif);
  font-size: 80px; line-height: 0.5;
  color: var(--gray2);
  margin-bottom: 12px;
}
.why-left blockquote {
  font-size: 15px; color: var(--gray4);
  font-style: italic; line-height: 1.7;
  border-left: 2px solid var(--accent);
  padding-left: 20px;
}

.why-right { display: flex; flex-direction: column; gap: 0; }
.why-item {
  padding: 32px 0;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  display: flex; flex-direction: column; gap: 8px;
}
.why-item:first-child { border-top: 1px solid rgba(0,0,0,0.08); }
.why-num { font-size: 12px; color: var(--accent); font-weight: 500; }
.why-item h4 { font-family: var(--serif); font-size: 22px; font-weight: 400; }
.why-item p { font-size: 14px; color: var(--gray4); max-width: 440px; }

@media(max-width:800px){
  .why-grid { grid-template-columns: 1fr; gap: 48px; }
  .why-left { position: static !important; }
}

/* ====== Contact (dark) ====== */
.contact-section {
  background: var(--dark);
  color: var(--white);
  padding: 140px 0 60px;
}
.contact-heading {
  margin-bottom: 80px;
}
.ch-line1 {
  display: block;
  font-family: var(--serif);
  font-size: clamp(40px, 8vw, 80px);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.02em;
  line-height: 1;
}
.ch-line2 {
  display: block;
  font-family: var(--serif);
  font-size: clamp(64px, 14vw, 160px);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 0.9;
}
.contact-divider { width: 100%; height: 1px; background: rgba(255,255,255,0.12); margin-bottom: 48px; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 100px;
}
@media(max-width:700px){ .contact-grid { grid-template-columns: 1fr; gap: 32px; } }
.contact-label {
  display: block;
  font-size: 12px; letter-spacing: 0.12em;
  color: var(--gray4);
  margin-bottom: 12px;
  text-transform: uppercase;
}
.contact-value {
  display: block;
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 400;
  color: var(--white);
  transition: color 0.2s ease;
  margin-bottom: 4px;
}
a.contact-value:hover { color: var(--accent); }

.footer-bar {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px; color: var(--gray4);
  letter-spacing: 0.04em;
}

/* ====== Cotizar FAB + Form ====== */
.fab-cotizar {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 80;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px;
  background: var(--white);
  color: var(--dark);
  border-radius: 50px;
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.1em;
  border: 1px solid var(--gray1);
  cursor: pointer;
  transition: background 0.25s ease, transform 0.25s ease, color 0.25s ease;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  font-family: var(--font);
}
.fab-cotizar:hover { background: var(--dark); color: var(--white); transform: translateY(-2px); }

.cotizar-overlay {
  position: fixed; inset: 0;
  z-index: 300;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  display: grid; place-items: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 20px;
}
.cotizar-overlay.open { opacity: 1; visibility: visible; }

.cotizar-form {
  background: var(--white);
  border-radius: 20px;
  padding: 36px 32px;
  width: 100%;
  max-width: 420px;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s ease;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.cotizar-overlay.open .cotizar-form { transform: translateY(0); }

.cotizar-close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.1);
  display: grid; place-items: center;
  font-size: 14px; color: var(--gray4);
  cursor: pointer;
  background: none;
  font-family: var(--font);
  transition: background 0.2s ease;
}
.cotizar-close:hover { background: var(--gray1); }

.cotizar-form h3 {
  font-family: var(--serif);
  font-size: 24px; font-weight: 400;
  margin-bottom: 6px;
  color: var(--dark);
}
.cotizar-form > p {
  font-size: 13px; color: var(--gray3);
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray4);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 12px;
  font-family: var(--font);
  font-size: 14px;
  color: var(--dark);
  background: var(--light);
  transition: border-color 0.2s ease;
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}
.cotizar-submit {
  width: 100%;
  padding: 14px;
  background: #25d366;
  color: #fff;
  border: none;
  border-radius: 12px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  transition: background 0.25s ease, transform 0.25s ease;
  margin-top: 8px;
}
.cotizar-submit:hover { background: #20bd5a; transform: translateY(-2px); }

/* ====== Reveal ====== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ====== Responsive ====== */
@media(max-width:700px){
  .hero { padding: 120px 20px 60px; }
  .hero-bg-text { font-size: 100px; }
  .section-light { padding: 80px 0; }
  .section-heading { margin-bottom: 48px; }
  .proj-stats { grid-template-columns: 1fr; gap: 12px; }
  .hero-cta-btn { bottom: 20px; right: 16px; padding: 12px 20px; font-size: 11px; }
  .contact-section { padding: 80px 0 40px; }
}