/* Voltcab India — Premium corporate landing page */

:root {
  --primary: #1565C0;
  --primary-dark: #0D47A1;
  --primary-soft: #E3F2FD;
  --green: #00A86B;
  --green-dark: #008F5B;
  --green-soft: #E8F8F1;
  --text: #1F2937;
  --text-secondary: #6B7280;
  --bg: #FFFFFF;
  --bg-alt: #F8FAFC;
  --border: #E5E7EB;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 12px 32px rgba(15, 23, 42, 0.1);
  --radius: 14px;
  --radius-sm: 10px;
  --header-h: 72px;
  --container: 1160px;
  --font: "Plus Jakarta Sans", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

a:hover {
  color: var(--primary-dark);
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, p {
  margin: 0;
}

address {
  font-style: normal;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 1000;
  background: var(--primary);
  color: #fff;
  padding: 12px 16px;
  border-radius: 8px;
  font-weight: 600;
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.btn:focus-visible {
  outline: 3px solid rgba(21, 101, 192, 0.35);
  outline-offset: 2px;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-sm {
  padding: 10px 18px;
  font-size: 0.9rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(21, 101, 192, 0.22);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.btn-whatsapp {
  width: 100%;
  margin-top: 24px;
  padding: 14px 20px;
  background: #128C7E;
  color: #fff;
  border-radius: 12px;
}

.btn-whatsapp:hover {
  background: #0E7A6E;
  color: #fff;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.8);
  transition: box-shadow 0.25s var(--ease);
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  flex-shrink: 0;
}

.logo:hover {
  color: var(--text);
}

.logo-text {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.logo-name {
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.logo-sub {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--green);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-list a {
  display: block;
  padding: 8px 12px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: 8px;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--primary);
  background: var(--primary-soft);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  padding: 0;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: min(92vh, 820px);
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
}

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

.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 28, 58, 0.35) 0%, rgba(8, 28, 58, 0.55) 45%, rgba(8, 28, 58, 0.82) 100%),
    linear-gradient(90deg, rgba(8, 28, 58, 0.55) 0%, rgba(8, 28, 58, 0.15) 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 96px 0 72px;
  max-width: 760px;
  margin-left: max((100% - var(--container)) / 2, 20px);
  margin-right: auto;
  width: min(100% - 40px, 760px);
}

.brand-signal {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  background: linear-gradient(90deg, #fff 0%, #B3E5FC 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 800;
  margin-bottom: 16px;
  max-width: 18ch;
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.94);
  margin-bottom: 12px;
}

.hero-support {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.82);
  max-width: 52ch;
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Trust strip */
.trust-strip {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}

.trust-list {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.trust-list li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
}

.trust-list .icon {
  width: 22px;
  height: 22px;
  color: var(--primary);
}

.metrics-list li {
  gap: 6px;
  padding: 4px 0;
}

.metric-value {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--primary);
  line-height: 1.2;
}

.metric-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  line-height: 1.35;
}

/* Sections */
.section {
  padding: 96px 0;
}

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

.section-header {
  max-width: 640px;
  margin-bottom: 48px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 12px;
}

.section h2,
.about h2 {
  font-size: clamp(1.9rem, 3.5vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin-bottom: 16px;
}

.section-desc,
.lead {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 58ch;
}

.lead-gap {
  margin-top: 14px;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.about-visual {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}

.about-visual img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
}

/* Product highlight */
.product-highlight {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 24px;
  margin-bottom: 32px;
  padding: 32px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.product-highlight-copy h3 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.product-highlight-copy p {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.spec-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.spec-chips li {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 0.82rem;
  font-weight: 600;
}

.spec-table {
  margin: 0;
  display: grid;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-alt);
}

.spec-table > div {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.spec-table > div:last-child {
  border-bottom: none;
}

.spec-table dt {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.spec-table dd {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

/* Feature cards */
.feature-grid,
.choice-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card,
.choice-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}

.feature-card:hover,
.choice-card:hover,
.industry-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: #D1D5DB;
}

.feature-icon,
.choice-icon,
.industry-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  color: var(--primary);
  background: var(--primary-soft);
}

.choice-icon {
  color: var(--green);
  background: var(--green-soft);
}

.feature-icon svg,
.choice-icon svg,
.industry-icon svg,
.icon {
  width: 22px;
  height: 22px;
}

.feature-card h3,
.choice-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.feature-card p,
.choice-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Industries */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.industry-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}

.industry-icon {
  margin-inline: auto;
  margin-bottom: 14px;
}

.industry-card h3 {
  font-size: 0.98rem;
  font-weight: 700;
}

.segment-card {
  text-align: left;
  padding: 28px 24px;
}

.segment-card .industry-icon {
  margin-inline: 0;
}

.segment-card p {
  margin-top: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Process timeline */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process-timeline::before {
  content: "";
  position: absolute;
  top: 52px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--green));
  opacity: 0.25;
}

.process-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  box-shadow: var(--shadow);
}

.process-num {
  display: block;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 16px;
}

.process-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--green);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--green);
  margin-bottom: 18px;
}

.process-step h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* Contact */
.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
  align-items: start;
}

.contact-card,
.inquiry-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow);
}

.contact-card h3,
.inquiry-card h3 {
  font-size: 1.2rem;
  font-weight: 750;
  margin-bottom: 24px;
}

.contact-details {
  display: grid;
  gap: 20px;
}

.contact-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.contact-details a,
.contact-details address {
  color: var(--text);
  font-weight: 600;
}

.contact-details a:hover {
  color: var(--primary);
}

.inquiry-form {
  display: grid;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
  background: var(--bg-alt);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
}

.field input:hover,
.field textarea:hover,
.field select:hover {
  border-color: #D1D5DB;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(21, 101, 192, 0.12);
}

.field input:invalid:not(:placeholder-shown),
.field textarea:invalid:not(:placeholder-shown) {
  border-color: #DC2626;
}

.form-note {
  min-height: 1.4em;
  font-size: 0.9rem;
  color: var(--green-dark);
  font-weight: 600;
}

/* CTA band */
.cta-band {
  position: relative;
  padding: 96px 0;
  background:
    linear-gradient(135deg, rgba(13, 71, 161, 0.92), rgba(0, 168, 107, 0.85)),
    url("https://images.unsplash.com/photo-1466611653911-95081537e5b7?auto=format&fit=crop&w=1800&q=80") center/cover;
  color: #fff;
  text-align: center;
}

.cta-inner {
  max-width: 680px;
}

.cta-band h2 {
  font-size: clamp(1.9rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

.cta-band .btn-primary {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}

.cta-band .btn-primary:hover {
  background: var(--primary-soft);
  color: var(--primary-dark);
}

/* Footer */
.site-footer {
  background: #0B1220;
  color: rgba(255, 255, 255, 0.78);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand p {
  max-width: 36ch;
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.socials {
  display: flex;
  gap: 10px;
}

.socials a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: background 0.2s, transform 0.2s;
}

.socials a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.socials svg {
  width: 18px;
  height: 18px;
}

.footer-links h3,
.footer-contact h3 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links a,
.footer-contact a {
  color: rgba(255, 255, 255, 0.72);
}

.footer-links a:hover,
.footer-contact a:hover {
  color: #fff;
}

.footer-links ul,
.footer-contact ul {
  display: grid;
  gap: 10px;
  font-size: 0.92rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.55);
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn:hover,
  .feature-card:hover,
  .choice-card:hover,
  .industry-card:hover {
    transform: none;
  }
}

/* Responsive */
@media (max-width: 1100px) {
  .trust-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .feature-grid,
  .choice-grid,
  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-highlight {
    grid-template-columns: 1fr;
  }

  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-timeline::before {
    display: none;
  }
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 16px auto;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow-hover);
    padding: 12px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
  }

  .nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-list a {
    padding: 12px 14px;
  }

  .header-actions .btn-sm {
    display: none;
  }

  .about-grid,
  .contact-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: min(88vh, 720px);
  }

  .hero-content {
    padding: 80px 0 56px;
  }

  .about-visual img {
    min-height: 280px;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 32px, var(--container));
  }

  .section {
    padding: 72px 0;
  }

  .trust-list,
  .feature-grid,
  .choice-grid,
  .industry-grid,
  .process-timeline,
  .form-row,
  .about-stats,
  .spec-table > div {
    grid-template-columns: 1fr;
  }

  .trust-list {
    gap: 20px;
  }

  .metrics-list li {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero h1 {
    max-width: none;
  }

  .product-highlight {
    padding: 24px;
  }

  .contact-card,
  .inquiry-card {
    padding: 24px;
  }

  .cta-band {
    padding: 72px 0;
  }
}