/* ==========================================================================
   Overdrive Visual Solutions — Brand Stylesheet
   ========================================================================== */

:root {
  --black: #1c1d21;
  --black-soft: #232428;
  --panel: #2a2c30;
  --panel-border: #3d3f45;
  --red: #e2231a;
  --red-dark: #a8180f;
  --blue: #2e8fe0;
  --blue-dark: #1e75c2;
  --white: #ffffff;
  --silver: #c7cad1;
  --gray: #94979d;
  --gray-dim: #6b6d73;

  --panel-gradient: linear-gradient(160deg, #2f3136 0%, #242629 100%);
  --surface-gradient: linear-gradient(165deg, #262830 0%, #1e1f23 100%);

  --font-head: "Rajdhani", "Arial Narrow", sans-serif;
  --font-body: "Inter", "Segoe UI", Arial, sans-serif;

  --max-width: 1180px;
  --radius: 4px;
  --transition: 200ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: radial-gradient(ellipse at 20% -10%, #212226 0%, var(--black) 45%);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0 0 0.5em;
}

p {
  color: var(--silver);
  margin: 0 0 1em;
}

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

section {
  padding: 72px 0;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 600;
  color: var(--red);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 12px;
}

.section-head {
  max-width: 640px;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: var(--white);
}

.section-head p {
  font-size: 1.05rem;
}

/* ---------------------------------- Buttons ---------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.9rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--red);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--red-dark);
}

.btn-outline {
  background: transparent;
  color: var(--blue);
  border-color: var(--blue);
}

.btn-outline:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* ---------------------------------- Header ---------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--panel-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

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

.brand img {
  height: 42px;
  width: auto;
}

.nav-wrap {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 32px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.92rem;
  color: var(--silver);
  transition: color var(--transition);
  position: relative;
  padding: 6px 0;
}

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

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--red);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--white);
}

/* ---------------------------------- Hero ---------------------------------- */

.hero {
  position: relative;
  padding: 120px 0 100px;
  background:
    radial-gradient(ellipse at top right, rgba(226, 35, 26, 0.14), transparent 55%),
    linear-gradient(180deg, #1c1d21 0%, #212226 100%);
  border-bottom: 1px solid var(--panel-border);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(255,255,255,0.035) 0px, rgba(255,255,255,0.035) 1px, transparent 1px, transparent 64px);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 760px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.08;
  color: var(--white);
}

.hero h1 span {
  color: var(--red);
}

.hero .lede {
  font-size: 1.15rem;
  max-width: 560px;
  color: var(--silver);
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.trust-line {
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--silver);
  margin: 24px 0 0;
}

.trust-line-sm {
  font-size: 0.72rem;
  color: var(--gray);
  margin: 14px 0 0;
}

.hero-tagline {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--panel-border);
  font-family: var(--font-head);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray);
  font-size: 0.85rem;
}

.hero-tagline strong {
  color: var(--silver);
}

/* ---------------------------------- Capability strip ---------------------------------- */

.strip {
  border-bottom: 1px solid var(--panel-border);
  background: var(--black-soft);
}

.strip .container {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--panel-border);
}

.strip-item {
  background: var(--surface-gradient);
  padding: 22px 16px;
  text-align: center;
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--silver);
  transition: color var(--transition), background var(--transition);
}

.strip-item:hover {
  color: var(--white);
  background: #34363b;
}

/* ---------------------------------- Cards ---------------------------------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

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

.card {
  background: var(--panel-gradient);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition), transform var(--transition);
}

.card:hover {
  border-color: var(--red);
  transform: translateY(-3px);
}

.card .num {
  font-family: var(--font-head);
  color: var(--blue);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  display: block;
}

.card h3 {
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: 10px;
}

.card p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

.card-link {
  display: block;
}

/* ---------------------------------- Tabs (Products / Solutions) ---------------------------------- */

.tabs {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: start;
}

.tab-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: sticky;
  top: 108px;
}

.tab-btn {
  text-align: left;
  background: var(--panel-gradient);
  border: 1px solid var(--panel-border);
  border-left: 3px solid transparent;
  color: var(--silver);
  padding: 16px 18px;
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.92rem;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.tab-btn:hover {
  color: var(--white);
  border-left-color: var(--gray-dim);
}

.tab-btn.active {
  color: var(--white);
  background: #34363b;
  border-left-color: var(--red);
}

.tab-panels {
  min-height: 360px;
}

.tab-panel {
  display: none;
  animation: fade-in 240ms ease;
}

.tab-panel.active {
  display: block;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.tab-panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 20px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.tab-panel-head h3 {
  font-size: 1.7rem;
  color: var(--white);
  margin: 0;
}

.tab-panel-head .tag {
  font-family: var(--font-head);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--blue);
  text-transform: uppercase;
  border: 1px solid var(--blue);
  border-radius: 999px;
  padding: 6px 14px;
}

.tab-panel-body {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* Photo gallery (Products page) */

.gallery {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--panel-border);
  background: var(--surface-gradient);
}

.gallery-track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.gallery-track::-webkit-scrollbar {
  display: none;
}

.gallery-slide {
  flex: 0 0 100%;
  scroll-snap-align: start;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-slide.is-placeholder {
  flex-direction: column;
  gap: 16px;
}

.gallery-slide.is-placeholder img {
  width: 34%;
  max-width: 220px;
  opacity: 0.92;
}

.gallery-placeholder-label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  margin: 0;
}

.gallery-slide img.gallery-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--panel-border);
  background: rgba(10, 10, 10, 0.55);
  color: var(--white);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition);
}

.gallery-nav:hover {
  background: rgba(226, 35, 26, 0.85);
  border-color: var(--red);
}

.gallery-nav:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

.gallery-nav.prev {
  left: 16px;
}

.gallery-nav.next {
  right: 16px;
}

.gallery-dots {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}

.gallery-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition);
}

.gallery-dot.active {
  background: var(--red);
  transform: scale(1.25);
}

.gallery-counter {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(10, 10, 10, 0.6);
  border: 1px solid var(--panel-border);
  color: var(--silver);
  font-family: var(--font-head);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 999px;
}

.gallery.single .gallery-nav,
.gallery.single .gallery-dots,
.gallery.single .gallery-counter {
  display: none;
}

.tab-content {
  max-width: 720px;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.spec-item {
  border-top: 1px solid var(--panel-border);
  padding-top: 12px;
}

.spec-item .label {
  font-family: var(--font-head);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  display: block;
  margin-bottom: 6px;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 1fr;
  gap: 16px;
  margin-top: 24px;
}

.app-item {
  background: var(--panel-gradient);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  padding: 0;
  font: inherit;
  color: inherit;
  transition: transform var(--transition), border-color var(--transition), opacity var(--transition);
}

.app-item:hover {
  border-color: var(--red);
}

.app-item:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

.app-item-media {
  aspect-ratio: 4 / 3;
  background: var(--surface-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--panel-border);
  flex: none;
}

.app-item-media img {
  width: 36%;
  max-width: 110px;
  opacity: 0.92;
}

.app-item-body {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.app-item-label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--white);
}

.app-item-detail {
  display: none;
  font-size: 0.88rem;
  color: var(--silver);
  margin: 0;
}

.app-grid.has-focus .app-item {
  opacity: 0.4;
  transform: scale(0.96);
}

.app-item.is-active {
  grid-column: span 2;
  grid-row: span 2;
  opacity: 1 !important;
  transform: none !important;
  border-color: var(--red);
}

.app-item.is-active .app-item-media {
  aspect-ratio: 16 / 9;
}

.app-item.is-active .app-item-media img {
  width: 22%;
}

.app-item.is-active .app-item-label {
  font-size: 1.15rem;
}

.app-item.is-active .app-item-detail {
  display: block;
}

/* ---------------------------------- Why / stats ---------------------------------- */

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-item {
  border-top: 2px solid var(--red);
  padding-top: 18px;
}

.why-item h3 {
  color: var(--white);
  font-size: 1.05rem;
}

.why-item p {
  font-size: 0.92rem;
}

/* ---------------------------------- CTA band ---------------------------------- */

.cta-band {
  background: linear-gradient(120deg, #26282c, #1c1d21 70%);
  border-top: 1px solid var(--panel-border);
  border-bottom: 1px solid var(--panel-border);
  text-align: center;
}

.cta-band h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  color: var(--white);
}

.cta-band p {
  max-width: 520px;
  margin: 0 auto 32px;
}

/* ---------------------------------- Footer ---------------------------------- */

.site-footer {
  padding: 56px 0 32px;
  background: var(--surface-gradient);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--panel-border);
  flex-wrap: wrap;
}

.footer-brand img {
  height: 40px;
  margin-bottom: 14px;
}

.footer-brand p {
  max-width: 320px;
  font-size: 0.9rem;
}

.footer-nav {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 0.82rem;
  color: var(--gray);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.92rem;
  color: var(--silver);
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--red);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 0.82rem;
  color: var(--gray-dim);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-legal {
  display: flex;
  gap: 18px;
}

.footer-legal a {
  color: var(--gray-dim);
  font-size: 0.82rem;
  transition: color var(--transition);
}

.footer-legal a:hover {
  color: var(--red);
}

/* ---------------------------------- Contact page ---------------------------------- */

.contact-hero {
  padding: 90px 0 60px;
  border-bottom: 1px solid var(--panel-border);
  text-align: center;
}

.contact-hero .eyebrow {
  justify-content: center;
}

.contact-hero h1 {
  font-size: clamp(2.2rem, 4vw, 3rem);
}

.contact-hero p {
  max-width: 560px;
  margin: 0 auto;
  font-size: 1.05rem;
}

.placeholder-note {
  display: inline-block;
  margin-top: 40px;
  padding: 14px 20px;
  border: 1px dashed var(--panel-border);
  border-radius: var(--radius);
  color: var(--gray);
  font-size: 0.85rem;
}

/* Contact form */

.contact-form {
  background: var(--panel-gradient);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 40px;
  max-width: 640px;
  margin: 0 auto;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-row {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-row label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
}

.form-row input,
.form-row select,
.form-row textarea {
  background: var(--black-soft);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--red);
}

.form-row textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  font-size: 0.82rem;
  color: var(--gray);
  margin-top: 4px;
  text-align: center;
}

/* Legal (Privacy / Terms) pages */

.legal-content {
  max-width: 720px;
}

.legal-content h2 {
  font-size: 1.3rem;
  color: var(--white);
  margin-top: 40px;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-updated {
  color: var(--gray);
  font-size: 0.85rem;
  margin-bottom: 40px;
}

/* 404 page */

.error-page {
  padding: 120px 0;
  text-align: center;
}

.error-code {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(4rem, 12vw, 7rem);
  color: var(--red);
  line-height: 1;
  margin-bottom: 12px;
}

.error-page p {
  max-width: 480px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
}

/* ---------------------------------- Responsive ---------------------------------- */

@media (max-width: 960px) {
  .strip .container {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .form-grid-2 {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 28px 22px;
  }

  .tabs {
    grid-template-columns: 1fr;
  }

  .tab-list {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .tab-btn {
    flex: 1 1 auto;
  }

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

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

  .app-item.is-active {
    grid-column: span 2;
    grid-row: span 1;
  }
}

@media (max-width: 720px) {
  .main-nav {
    position: fixed;
    inset: 84px 0 0 0;
    background: var(--black);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 24px;
    transform: translateX(100%);
    transition: transform 260ms ease;
  }

  .main-nav.open {
    transform: translateX(0);
  }

  .main-nav ul {
    flex-direction: column;
    gap: 20px;
    width: 100%;
  }

  .main-nav a {
    display: block;
    font-size: 1.1rem;
  }

  .nav-toggle {
    display: flex;
  }

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

  .card-grid {
    grid-template-columns: 1fr;
  }

  .why-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    flex-direction: column;
  }

  .footer-nav {
    gap: 32px;
  }

  section {
    padding: 56px 0;
  }

  .hero {
    padding: 96px 0 64px;
  }

  .spec-grid {
    grid-template-columns: 1fr;
  }

  .app-grid {
    grid-template-columns: 1fr;
  }

  .app-item.is-active {
    grid-column: auto;
    grid-row: auto;
  }

  .gallery-nav {
    width: 36px;
    height: 36px;
    font-size: 1.1rem;
  }
}