/* ============================================
   SUDHIR V. VALIA — Executive Profile
   Premium Corporate Stylesheet
   ============================================ */

/* --- CSS Variables --- */
:root {
  --navy: #0a1628;
  --navy-light: #132240;
  --charcoal: #1e2a3a;
  --charcoal-light: #2a3a4e;
  --slate: #3d4f63;
  --silver: #8a9bb0;
  --silver-light: #b0bec5;
  --white: #ffffff;
  --off-white: #f4f6f8;
  --accent-gold: #c9a84c;
  --accent-gold-light: #d4b96a;
  --border-subtle: rgba(255,255,255,0.08);
  --border-light: rgba(10,22,40,0.08);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.18);
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-primary);
  color: var(--charcoal);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul, ol { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy);
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.4rem); }

p {
  font-size: 1.05rem;
  color: var(--slate);
  max-width: 680px;
}

.text-accent { color: var(--accent-gold); }
.text-white { color: var(--white); }
.text-silver { color: var(--silver-light); }

/* --- Password Page --- */
.password-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

.password-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.password-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0a1628 0%, #132240 40%, #1a2d50 70%, #0a1628 100%);
  overflow: hidden;
}

.password-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 50%, rgba(201,168,76,0.04) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(138,155,176,0.03) 0%, transparent 60%);
  animation: ambientShift 20s ease-in-out infinite;
}

@keyframes ambientShift {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(2%, -1%) rotate(1deg); }
}

.password-container {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem;
}

.password-container .lock-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 2rem;
  border: 2px solid rgba(201,168,76,0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.password-container .lock-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent-gold);
  fill: none;
  stroke-width: 1.5;
}

.password-container h2 {
  font-family: var(--font-primary);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 2.5rem;
}

.password-input-wrap {
  position: relative;
  width: 320px;
  margin: 0 auto;
}

.password-input-wrap input {
  width: 100%;
  padding: 1rem 1.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  color: var(--white);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  text-align: center;
  outline: none;
  transition: var(--transition);
}

.password-input-wrap input::placeholder {
  color: var(--silver);
  letter-spacing: 0.1em;
  font-size: 0.85rem;
}

.password-input-wrap input:focus {
  border-color: var(--accent-gold);
  background: rgba(255,255,255,0.06);
}

.password-input-wrap.shake input {
  animation: shakeInput 0.5s ease;
  border-color: #e74c3c;
}

@keyframes shakeInput {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(6px); }
}

.password-enter-btn {
  margin-top: 1.5rem;
  padding: 0.75rem 3rem;
  background: transparent;
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  font-family: var(--font-primary);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 2px;
}

.password-enter-btn:hover {
  background: var(--accent-gold);
  color: var(--navy);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 4%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
  background: transparent;
}

.nav.scrolled {
  background: rgba(10,22,40,0.95);
  backdrop-filter: blur(20px);
  padding: 0.9rem 4%;
  box-shadow: 0 1px 20px rgba(0,0,0,0.15);
}

.nav-logo {
  font-family: var(--font-primary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
}

.nav-logo span {
  color: var(--accent-gold);
  font-weight: 400;
}

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

.nav-links a {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-gold);
  transition: var(--transition);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 1.5px;
  background: var(--white);
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -5px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy);
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  opacity: 0.35;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--navy) 0%, rgba(10,22,40,0.7) 50%, rgba(10,22,40,0.3) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 8%;
  max-width: 700px;
}

.hero-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hero-label::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--accent-gold);
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.hero-tagline {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 400;
  font-style: italic;
  color: var(--silver-light);
  margin-bottom: 2rem;
}

.hero-desc {
  color: rgba(255,255,255,0.6);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2.5rem;
  background: transparent;
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  font-family: var(--font-primary);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 2px;
}

.btn-primary:hover {
  background: var(--accent-gold);
  color: var(--navy);
}

.btn-primary svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

/* --- Page Hero (Inner Pages) --- */
.page-hero {
  position: relative;
  height: 55vh;
  min-height: 400px;
  display: flex;
  align-items: flex-end;
  background: var(--navy);
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
}

.page-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  opacity: 0.25;
}

.page-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--navy) 0%, rgba(10,22,40,0.5) 100%);
}

.page-hero-content {
  position: relative;
  z-index: 2;
  padding: 4rem 8% 3rem;
  width: 100%;
}

.page-hero-content .hero-label {
  margin-bottom: 1rem;
}

.page-hero-content h1 {
  color: var(--white);
  margin-bottom: 0.75rem;
}

.page-hero-content p {
  color: var(--silver-light);
  font-size: 1.1rem;
  max-width: 600px;
}

/* --- Sections --- */
.section {
  padding: 6rem 8%;
}

.section-dark {
  background: var(--navy);
}

.section-alt {
  background: var(--off-white);
}

.section-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.section-label::before {
  content: '';
  width: 30px;
  height: 1px;
  background: var(--accent-gold);
}

.section h2 {
  margin-bottom: 1.5rem;
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--white);
}

.section-dark p {
  color: var(--silver-light);
}

.section-dark .section-label::before {
  background: var(--accent-gold);
}

/* --- Grid Layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* --- Stat Cards --- */
.stat-card {
  padding: 2rem;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-gold);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--silver);
}

/* --- Info Cards --- */
.info-card {
  padding: 2.5rem;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  transition: var(--transition);
}

.info-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.info-card-dark {
  background: var(--navy-light);
  border-color: var(--border-subtle);
}

.info-card .icon {
  width: 48px;
  height: 48px;
  border: 1px solid var(--accent-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.info-card .icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent-gold);
  fill: none;
  stroke-width: 1.5;
}

.info-card h4 {
  margin-bottom: 0.75rem;
}

.info-card p {
  font-size: 0.95rem;
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 3rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent-gold), var(--border-light));
}

.timeline-item {
  position: relative;
  padding-bottom: 3rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -3rem;
  top: 0.5rem;
  width: 9px;
  height: 9px;
  background: var(--accent-gold);
  border-radius: 50%;
  transform: translateX(-4px);
}

.timeline-item .year {
  font-family: var(--font-primary);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.timeline-item h4 {
  margin-bottom: 0.5rem;
}

.timeline-item p {
  font-size: 0.95rem;
}

/* --- Quote Block --- */
.quote-block {
  position: relative;
  padding: 3rem 4rem;
  border-left: 3px solid var(--accent-gold);
  margin: 3rem 0;
}

.quote-block p {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-style: italic;
  color: var(--white);
  max-width: 100%;
  line-height: 1.6;
}

.quote-block .attribution {
  font-family: var(--font-primary);
  font-size: 0.85rem;
  font-style: normal;
  color: var(--accent-gold);
  margin-top: 1.5rem;
  letter-spacing: 0.05em;
}

/* --- Image Section --- */
.img-full {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.img-container {
  overflow: hidden;
  border-radius: 4px;
}

.img-container img {
  transition: transform var(--transition-slow);
}

.img-container:hover img {
  transform: scale(1.03);
}

/* --- Gallery Grid --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  aspect-ratio: 4/3;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,22,40,0.6) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover::after {
  opacity: 1;
}

.gallery-item.large {
  grid-column: span 2;
  grid-row: span 2;
}

/* --- Contact Form --- */
.contact-form {
  max-width: 560px;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--charcoal);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: var(--off-white);
  border: 1px solid var(--border-light);
  border-radius: 3px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  color: var(--charcoal);
  outline: none;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-gold);
  background: var(--white);
}

.form-group textarea {
  height: 140px;
  resize: vertical;
}

/* --- Social Icons --- */
.social-icons {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.social-icons a {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.social-icons a:hover {
  border-color: var(--accent-gold);
  background: var(--accent-gold);
}

.social-icons a i {
  font-size: 15px;
  color: var(--silver);
  transition: var(--transition);
}

.social-icons a:hover i {
  color: var(--navy);
}

/* --- Footer --- */
.footer {
  background: var(--navy);
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 8%;
}

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

.footer-left p {
  font-size: 0.85rem;
  color: var(--silver);
}

.footer-left a {
  color: var(--accent-gold);
}

.footer-left a:hover {
  text-decoration: underline;
}

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

.footer-contact a {
  font-size: 0.85rem;
  color: var(--silver);
}

.footer-contact a:hover {
  color: var(--accent-gold);
}

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

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

/* --- Divider --- */
.divider {
  width: 60px;
  height: 1px;
  background: var(--accent-gold);
  margin: 2rem 0;
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(10,22,40,0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
}

.lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  background: none;
  color: var(--white);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.lightbox-close:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-2 { grid-template-columns: 1fr; gap: 2.5rem; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-item.large { grid-column: span 1; grid-row: span 1; }
  .section { padding: 4rem 6%; }
  .hero-content { padding: 0 6%; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--navy);
    flex-direction: column;
    justify-content: center;
    gap: 1.5rem;
    padding: 2rem;
    transition: var(--transition);
    box-shadow: -10px 0 40px rgba(0,0,0,0.3);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }

  .page-hero { height: 45vh; min-height: 320px; }
  .page-hero-content { padding: 3rem 6% 2rem; }

  .hero-content { max-width: 100%; }

  .footer-inner { flex-direction: column; text-align: center; }
  .footer-contact { flex-direction: column; gap: 0.75rem; }

  .quote-block { padding: 2rem; }
  .quote-block p { font-size: 1.2rem; }

  .stat-number { font-size: 2rem; }
}

@media (max-width: 480px) {
  .section { padding: 3rem 5%; }
  .grid-4 { grid-template-columns: 1fr; }
  .password-input-wrap { width: 280px; }
  h1 { font-size: 2rem; }
}