/* ===================================================
   NexVolt Automation LLP — Main Stylesheet
   =================================================== */

:root {
  --orange:       #ff6b00;
  --orange-light: #ff9a44;
  --orange-dark:  #e05500;
  --dark:         #111827;
  --dark-2:       #1a2233;
  --light:        #f4f6f9;
  --gray:         #6b7280;
  --white:        #ffffff;
  --shadow-sm:    0 2px 8px rgba(0,0,0,.08);
  --shadow-md:    0 8px 30px rgba(0,0,0,.12);
  --shadow-lg:    0 20px 60px rgba(0,0,0,.18);
  --radius:       10px;
  --radius-lg:    18px;
  --transition:   .3s cubic-bezier(.4,0,.2,1);
  --max-width:    1200px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }
body { font-family:'Montserrat',sans-serif; background:var(--white); color:var(--dark); line-height:1.6; overflow-x:hidden; }
img  { max-width:100%; display:block; }
a    { color:inherit; text-decoration:none; }
ul   { list-style:none; }
address { font-style:normal; }

/* ── Utilities ── */
.container { max-width:var(--max-width); margin:0 auto; padding:0 24px; }

.btn {
  display:inline-block; padding:13px 28px; border-radius:6px;
  font-weight:700; font-size:15px; cursor:pointer; border:none;
  transition:var(--transition); letter-spacing:.3px; font-family:'Montserrat',sans-serif;
}
.btn-primary { background:var(--orange); color:var(--white); }
.btn-primary:hover { background:var(--orange-dark); transform:translateY(-2px); box-shadow:0 8px 20px rgba(255,107,0,.35); }
.btn-outline  { border:2px solid var(--white); color:var(--white); background:transparent; }
.btn-outline:hover { background:var(--white); color:var(--dark); transform:translateY(-2px); }
.btn-full { width:100%; text-align:center; }

.eyebrow {
  display:inline-block; font-size:12px; font-weight:700;
  letter-spacing:2.5px; text-transform:uppercase; color:var(--orange); margin-bottom:12px;
}

.section-title { text-align:center; margin-bottom:60px; }
.section-title h2 { font-size:clamp(32px,4vw,48px); font-weight:800; line-height:1.15; margin-bottom:10px; }
.section-title p  { font-size:18px; color:var(--gray); }

/* ── Animations ── */
.animate-fade-up { opacity:0; transform:translateY(30px); animation:fadeUp .8s forwards; }
.delay-1 { animation-delay:.15s; }
.delay-2 { animation-delay:.3s; }
.delay-3 { animation-delay:.45s; }
@keyframes fadeUp { to { opacity:1; transform:translateY(0); } }

/* ── Header ── */
#header {
  position:fixed; top:0; left:0; width:100%;
  background:var(--white); box-shadow:var(--shadow-sm); z-index:1000; transition:var(--transition);
}
#header.scrolled { box-shadow:0 4px 20px rgba(0,0,0,.12); }

.navbar {
  display:flex; align-items:center; justify-content:space-between;
  padding-top:14px; padding-bottom:14px; gap:20px;
}

.logo img { height:52px; width:auto; }

.nav-links { display:flex; gap:32px; }
.nav-links a { font-weight:600; font-size:14px; color:#333; position:relative; padding-bottom:3px; }
.nav-links a::after { content:''; position:absolute; bottom:0; left:0; width:0; height:2px; background:var(--orange); transition:var(--transition); }
.nav-links a:hover::after, .nav-links a.active::after { width:100%; }
.nav-cta { font-size:14px; padding:10px 22px; }

.hamburger { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:4px; }
.hamburger span { display:block; width:24px; height:2px; background:var(--dark); transition:var(--transition); border-radius:2px; }
.hamburger.open span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity:0; }
.hamburger.open span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }

/* ── Hero ── */
.hero {
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  text-align:center; padding:130px 24px 80px; position:relative;
  color:var(--white); overflow:hidden;
  /* background removed — slider handles it */
}
.hero-overlay {
  position:absolute; inset:0;
  background:linear-gradient(rgba(0,0,0,.68),rgba(0,0,0,.68));
  z-index:1; pointer-events:none;
}
/* Orange radial glow on top of dark overlay */
.hero-overlay::after {
  content:''; position:absolute; inset:0;
  background:radial-gradient(ellipse at 60% 40%,rgba(255,107,0,.12) 0%,transparent 70%);
}
.hero-content  { position:relative; z-index:3; max-width:860px; }
.hero-logo     { max-width:500px; margin:0 auto 30px; }
.hero h1       { font-size:clamp(30px,5vw,54px); font-weight:800; line-height:1.2; margin-bottom:20px; }
.hero-tagline  { font-size:clamp(14px,1.8vw,18px); line-height:1.9; color:rgba(255,255,255,.82); margin-bottom:36px; }
.hero-buttons  { display:flex; justify-content:center; gap:16px; flex-wrap:wrap; }

/* ── Hero Slider ── */
.hero-slider {
  position:absolute; inset:0; z-index:0;
}
.hero-slide {
  position:absolute; inset:0;
  background-size:cover; background-position:center; background-repeat:no-repeat;
  opacity:0;
  transition:opacity 1.2s ease;
  /* Ken Burns zoom effect */
  animation:kenBurns 18s ease-in-out infinite alternate;
  will-change:transform,opacity;
}
.hero-slide.active {
  opacity:1;
}
@keyframes kenBurns {
  0%   { transform:scale(1)    translateX(0)     translateY(0); }
  50%  { transform:scale(1.06) translateX(-1%)   translateY(-0.5%); }
  100% { transform:scale(1.12) translateX(1%)    translateY(0.5%); }
}

/* Slider prev/next buttons */
.hero-slider-btn {
  position:absolute; top:50%; transform:translateY(-50%);
  z-index:4; background:rgba(0,0,0,.35); color:#fff;
  border:2px solid rgba(255,255,255,.3); border-radius:50%;
  width:52px; height:52px; font-size:28px; line-height:1;
  cursor:pointer; transition:var(--transition);
  display:flex; align-items:center; justify-content:center;
  backdrop-filter:blur(4px);
}
.hero-slider-btn:hover { background:var(--orange); border-color:var(--orange); transform:translateY(-50%) scale(1.08); }
.hero-slider-prev { left:24px; }
.hero-slider-next { right:24px; }

/* Navigation dots */
.hero-slider-dots {
  position:absolute; bottom:68px; left:50%; transform:translateX(-50%);
  z-index:4; display:flex; gap:10px;
}
.hero-dot {
  width:10px; height:10px; border-radius:50%;
  background:rgba(255,255,255,.4); border:none; cursor:pointer;
  transition:var(--transition); padding:0;
}
.hero-dot.active { background:var(--orange); transform:scale(1.3); }
.hero-dot:hover  { background:rgba(255,255,255,.8); }

.hero-scroll-indicator { position:absolute; bottom:30px; left:50%; transform:translateX(-50%); z-index:1; }
.hero-scroll-indicator span { display:block; width:22px; height:34px; border:2px solid rgba(255,255,255,.5); border-radius:12px; position:relative; }
.hero-scroll-indicator span::after {
  content:''; position:absolute; top:5px; left:50%; transform:translateX(-50%);
  width:4px; height:8px; background:rgba(255,255,255,.7); border-radius:2px; animation:scrollBounce 1.6s infinite;
}
@keyframes scrollBounce { 0%,100%{transform:translate(-50%,0);opacity:1} 80%{transform:translate(-50%,10px);opacity:0} }

/* ── Stats ── */
.stats-band { background:var(--orange); padding:40px 24px; }
.stats-grid  { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; }
.stat-item   { display:flex; flex-direction:column; align-items:center; gap:4px; }
.stat-number { font-size:clamp(32px,4vw,46px); font-weight:900; color:var(--white); line-height:1; }
.stat-plus   { font-size:.65em; }
.stat-label  { font-size:13px; font-weight:600; color:rgba(255,255,255,.85); letter-spacing:.5px; text-transform:uppercase; }

/* ── About ── */
.about { padding:100px 24px; }
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.about-visual { position:relative; }
.about-visual img { width:100%; max-width:480px; margin:auto; filter:drop-shadow(0 20px 40px rgba(255,107,0,.15)); }
.about-badge { position:absolute; bottom:-10px; right:20px; background:var(--orange); color:var(--white); font-weight:800; font-size:14px; padding:10px 18px; border-radius:var(--radius); box-shadow:var(--shadow-md); }
.about-text h3 { font-size:clamp(26px,3vw,36px); font-weight:800; margin-bottom:20px; line-height:1.2; }
.about-text p  { font-size:16px; color:#555; line-height:1.85; margin-bottom:16px; }
.about-highlights { margin:24px 0 32px; display:flex; flex-direction:column; gap:10px; }
.about-highlights li { display:flex; align-items:center; gap:10px; font-size:15px; font-weight:600; }
.check { width:22px; height:22px; background:var(--orange); color:var(--white); border-radius:50%; display:inline-flex; align-items:center; justify-content:center; font-size:12px; flex-shrink:0; }

/* ── Services ── */
.services { padding:100px 24px; background:var(--light); }
.service-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:24px; }
.card { background:var(--white); padding:36px 30px; border-radius:var(--radius-lg); box-shadow:var(--shadow-sm); transition:var(--transition); border:1px solid transparent; display:flex; flex-direction:column; gap:12px; }
.card:hover { transform:translateY(-8px); box-shadow:var(--shadow-lg); border-color:rgba(255,107,0,.15); }
.card-icon { width:56px; height:56px; color:var(--orange); }
.card-icon svg { width:100%; height:100%; }
.card h3 { font-size:19px; font-weight:700; color:var(--dark); }
.card p  { font-size:15px; color:var(--gray); line-height:1.8; flex-grow:1; }
.card-link { font-size:14px; font-weight:700; color:var(--orange); transition:var(--transition); margin-top:4px; display:inline-block; }
.card-link:hover { color:var(--orange-dark); }

/* ── Why Us ── */
.why-us { padding:100px 24px; }
.why-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:40px; }
.why-item { border-top:3px solid var(--orange); padding-top:24px; }
.why-number { font-size:42px; font-weight:900; color:rgba(255,107,0,.12); line-height:1; margin-bottom:8px; letter-spacing:-2px; }
.why-item h4 { font-size:18px; font-weight:700; margin-bottom:10px; }
.why-item p  { font-size:15px; color:var(--gray); line-height:1.75; }

/* ── Contact ── */
.contact { padding:100px 24px; background:var(--dark); }
.contact-grid { display:grid; grid-template-columns:1fr 1.4fr; gap:60px; align-items:start; }
.contact-info h3 { font-size:24px; font-weight:800; color:var(--white); margin-bottom:32px; }
.contact-item { display:flex; gap:16px; margin-bottom:28px; align-items:flex-start; }
.contact-icon { font-size:22px; flex-shrink:0; margin-top:2px; }
.contact-item strong { display:block; color:var(--orange); font-size:12px; font-weight:700; letter-spacing:1.5px; text-transform:uppercase; margin-bottom:4px; }
.contact-item a, .contact-item address { color:rgba(255,255,255,.75); font-size:15px; line-height:1.6; }
.contact-item a:hover { color:var(--orange-light); }

/* Contact Form */
.contact-form { background:var(--dark-2); padding:36px; border-radius:var(--radius-lg); }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-group { display:flex; flex-direction:column; gap:6px; margin-bottom:16px; }
.form-group label { font-size:13px; font-weight:700; color:rgba(255,255,255,.75); letter-spacing:.5px; text-transform:uppercase; }

.form-group input,
.form-group textarea {
  background:#ffffff;
  border:2px solid #e5e7eb;
  border-radius:7px;
  padding:13px 16px;
  color:#111827;
  font-family:'Montserrat',sans-serif;
  font-size:15px;
  font-weight:500;
  transition:var(--transition);
  outline:none;
  resize:vertical;
  width:100%;
  -webkit-appearance:none;
  appearance:none;
  cursor:text;
  caret-color:#ff6b00;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color:#9ca3af; font-weight:400; }

.form-group input:focus,
.form-group textarea:focus {
  border-color:var(--orange);
  box-shadow:0 0 0 3px rgba(255,107,0,.18);
  background:#fffaf7;
}

.form-group input:hover,
.form-group textarea:hover { border-color:#ff6b00; }

.form-note { text-align:center; font-size:12px; color:rgba(255,255,255,.4); margin-top:12px; }

/* ── Footer ── */
footer { background:#000; color:rgba(255,255,255,.7); padding-top:60px; }
.footer-inner { display:grid; grid-template-columns:1.5fr 1fr 1fr 1.5fr; gap:40px; padding-bottom:48px; border-bottom:1px solid rgba(255,255,255,.08); }
.footer-brand img { height:60px; margin-bottom:14px; }
.footer-brand p   { font-size:13px; color:rgba(255,255,255,.45); }
footer h4 { font-size:13px; font-weight:700; color:var(--white); letter-spacing:1.5px; text-transform:uppercase; margin-bottom:16px; }
footer ul li { margin-bottom:8px; }
footer ul li a { font-size:14px; color:rgba(255,255,255,.55); transition:var(--transition); }
footer ul li a:hover { color:var(--orange); }
.footer-services ul li { font-size:14px; color:rgba(255,255,255,.55); margin-bottom:8px; }
.footer-contact p { font-size:14px; color:rgba(255,255,255,.55); line-height:1.7; margin-bottom:8px; }
.footer-contact a { color:rgba(255,255,255,.55); transition:var(--transition); }
.footer-contact a:hover { color:var(--orange); }
.footer-bottom { padding:20px 0; text-align:center; }
.footer-bottom p { font-size:13px; color:rgba(255,255,255,.3); }

/* ── Scroll-reveal ── */
.revealed { opacity:1 !important; transform:none !important; }

/* ══════════════════════════════════════════════════
   PROJECTS & DOWNLOADS SECTION
   ══════════════════════════════════════════════════ */
.projects-section { padding:100px 24px; background:var(--white); }

/* ── Search ── */
.projects-search-wrap {
  display:flex; justify-content:center; margin-bottom:28px;
}
.projects-search-inner {
  position:relative; width:100%; max-width:520px;
}
.search-icon {
  position:absolute; left:16px; top:50%; transform:translateY(-50%);
  width:18px; height:18px; color:var(--gray); pointer-events:none;
}
.projects-search {
  width:100%; padding:14px 18px 14px 46px;
  border:2px solid #e5e7eb; border-radius:50px;
  font-family:'Montserrat',sans-serif; font-size:15px; color:var(--dark);
  outline:none; transition:var(--transition);
  background:#fff;
}
.projects-search:focus { border-color:var(--orange); box-shadow:0 0 0 3px rgba(255,107,0,.15); }

/* ── Filters ── */
.projects-filters {
  display:flex; flex-wrap:wrap; gap:10px;
  justify-content:center; margin-bottom:48px;
}
.filter-btn {
  padding:8px 20px; border-radius:50px;
  border:2px solid #e5e7eb; background:#fff;
  font-family:'Montserrat',sans-serif; font-size:13px; font-weight:600;
  color:var(--gray); cursor:pointer; transition:var(--transition);
}
.filter-btn:hover { border-color:var(--orange); color:var(--orange); }
.filter-btn.active { background:var(--orange); border-color:var(--orange); color:#fff; }

/* ── Project Grid ── */
.projects-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:28px;
}

/* ── Project Card ── */
.proj-card {
  background:#fff; border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm); border:1px solid #f0f0f0;
  overflow:hidden; transition:var(--transition);
  display:flex; flex-direction:column;
}
.proj-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-lg); border-color:rgba(255,107,0,.2); }

/* Project image */
.proj-img-wrap {
  position:relative; overflow:hidden; height:200px; cursor:pointer;
  background:var(--light);
}
.proj-img-wrap img {
  width:100%; height:100%; object-fit:cover;
  transition:transform .5s ease;
}
.proj-img-wrap:hover img { transform:scale(1.06); }
.proj-img-overlay {
  position:absolute; inset:0; background:rgba(0,0,0,.45);
  display:flex; align-items:center; justify-content:center;
  opacity:0; transition:var(--transition);
}
.proj-img-wrap:hover .proj-img-overlay { opacity:1; }
.proj-img-zoom {
  color:#fff; font-size:13px; font-weight:700; letter-spacing:1px;
  border:2px solid #fff; padding:8px 16px; border-radius:4px;
}

/* Card body */
.proj-body { padding:24px; display:flex; flex-direction:column; gap:12px; flex:1; }
.proj-name { font-size:17px; font-weight:800; color:var(--dark); line-height:1.3; }
.proj-desc { font-size:14px; color:var(--gray); line-height:1.75; }

/* Tech tags */
.proj-tech { display:flex; flex-wrap:wrap; gap:7px; }
.proj-tag {
  background:rgba(255,107,0,.08); color:var(--orange);
  border:1px solid rgba(255,107,0,.2);
  padding:4px 11px; border-radius:20px;
  font-size:12px; font-weight:700;
}

/* Meta row */
.proj-meta {
  display:flex; align-items:center; gap:8px;
  font-size:12px; color:var(--gray); font-weight:600;
}
.proj-meta-dot {
  width:4px; height:4px; background:var(--orange);
  border-radius:50%; flex-shrink:0;
}

/* PDF buttons */
.proj-actions {
  display:grid; grid-template-columns:1fr 1fr; gap:10px;
  margin-top:auto; padding-top:16px;
  border-top:1px solid #f0f0f0;
}
.proj-btn {
  display:flex; align-items:center; justify-content:center; gap:7px;
  padding:10px 14px; border-radius:6px;
  font-family:'Montserrat',sans-serif; font-size:13px; font-weight:700;
  cursor:pointer; transition:var(--transition); text-decoration:none;
  border:none;
}
.proj-btn-view {
  background:#fff; color:var(--orange);
  border:2px solid var(--orange);
}
.proj-btn-view:hover { background:var(--orange); color:#fff; }
.proj-btn-download {
  background:var(--orange); color:#fff;
  border:2px solid var(--orange);
}
.proj-btn-download:hover { background:var(--orange-dark); border-color:var(--orange-dark); transform:translateY(-1px); }

/* File type badge */
.proj-file-badge {
  display:inline-flex; align-items:center; gap:5px;
  position:absolute; top:12px; right:12px;
  color:#fff; font-size:11px; font-weight:800;
  padding:4px 10px; border-radius:4px;
  letter-spacing:.5px; text-transform:uppercase;
  box-shadow:0 2px 8px rgba(0,0,0,.3);
  z-index:2;
}
.proj-img-wrap { position:relative; } /* ensure badge positions correctly */

/* PDF icon SVG */
.pdf-icon { width:16px; height:16px; flex-shrink:0; }

/* Empty state */
.projects-empty {
  text-align:center; padding:60px 20px; color:var(--gray);
  font-size:16px;
}

/* ── Lightbox (Feature 6) ── */
.proj-lightbox {
  position:fixed; inset:0; z-index:9999;
  background:rgba(0,0,0,.92);
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  opacity:0; pointer-events:none;
  transition:opacity .3s;
}
.proj-lightbox.open { opacity:1; pointer-events:all; }
.proj-lightbox-close {
  position:absolute; top:20px; right:28px;
  background:none; border:none; color:#fff;
  font-size:44px; cursor:pointer; line-height:1;
  transition:var(--transition);
}
.proj-lightbox-close:hover { color:var(--orange); transform:rotate(90deg); }
.proj-lightbox-img {
  max-width:90vw; max-height:80vh;
  border-radius:8px; box-shadow:0 20px 60px rgba(0,0,0,.5);
  object-fit:contain;
}
.proj-lightbox-caption {
  margin-top:16px; color:rgba(255,255,255,.7);
  font-size:15px; font-weight:600; text-align:center;
}

/* Plant name label — shown on plant slides only */
.hero-plant-label {
  position:absolute; bottom:120px; left:50%; transform:translateX(-50%);
  z-index:4; text-align:center;
}
.hero-plant-name {
  display:inline-block;
  font-size:clamp(22px,4vw,48px);
  font-weight:800;
  color:#ffffff;
  letter-spacing:3px;
  text-transform:uppercase;
  font-family:'Montserrat',sans-serif;
  text-shadow:0 2px 20px rgba(0,0,0,.7);
  border-bottom:3px solid var(--orange);
  padding-bottom:8px;
}

/* Hide/show hero content vs plant label */
.hero-content.hidden { opacity:0; pointer-events:none; transition:opacity .6s; }
.hero-content.visible { opacity:1; pointer-events:all; transition:opacity .6s; }

@media(max-width:768px){
  .hero-plant-label { bottom:100px; }
}
@media (max-width:768px) {
  .hero-slider-btn { width:40px; height:40px; font-size:22px; }
  .hero-slider-prev { left:12px; }
  .hero-slider-next { right:12px; }
  .projects-grid { grid-template-columns:1fr; }
  .proj-actions { grid-template-columns:1fr 1fr; }
}

/* ── Responsive ── */
@media (max-width:1024px) {
  .footer-inner { grid-template-columns:1fr 1fr; }
}

@media (max-width:768px) {
  .hamburger { display:flex; }

  nav {
    position:fixed; top:80px; left:0; right:0;
    background:var(--white); box-shadow:var(--shadow-md);
    padding:24px; transform:translateY(-120%); opacity:0;
    transition:var(--transition); pointer-events:none;
  }
  nav.open { transform:translateY(0); opacity:1; pointer-events:all; }
  .nav-links { flex-direction:column; gap:20px; }
  .nav-links a { font-size:16px; }
  .nav-cta { display:none; }

  .about-grid, .contact-grid { grid-template-columns:1fr; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .form-row   { grid-template-columns:1fr; }
  .footer-inner { grid-template-columns:1fr; gap:30px; }
  .hero-logo  { max-width:280px; }
  .about-badge { right:0; }
  .contact-form { padding:24px; }
}

@media (max-width:480px) {
  .stats-grid { grid-template-columns:1fr 1fr; gap:12px; }
  .hero-buttons { flex-direction:column; align-items:center; }
  .btn { width:100%; max-width:260px; text-align:center; }
}

@media (prefers-reduced-motion:reduce) {
  .animate-fade-up { animation:none; opacity:1; transform:none; }
  .hero-scroll-indicator span::after { animation:none; }
}