/* ============================================================
   Auto Tech — Layout & Structure
   layout.css
   ============================================================ */

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

/* ── Section base ── */
.section {
  padding-block: var(--section-py);
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: var(--space-4);
}

.section-eyebrow i {
  font-size: 1rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--weight-extrabold);
  color: var(--color-heading);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.section-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
}

/* ── Nav ── */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#nav.scrolled {
  background: rgba(9, 14, 24, 0.95);
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  z-index: 10;
}

.nav-logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: 0.05em;
  font-size: 1.35rem;
  color: var(--color-heading);
  line-height: 1;
}

.nav-logo-text span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  transition: color var(--duration-base) var(--ease-out);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width var(--duration-base) var(--ease-out);
}

.nav-links a:hover {
  color: var(--color-heading);
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

/* hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  cursor: pointer;
  z-index: 1100;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-base) var(--ease-out);
  transform-origin: center;
}

.hamburger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile overlay */
.mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 1050;
  background: var(--color-bg-deep);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-100%);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.mobile-overlay.is-open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.mobile-overlay a {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 6vw, 3rem);
  font-weight: var(--weight-extrabold);
  color: var(--color-text);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color var(--duration-base) var(--ease-out);
}

.mobile-overlay a:hover {
  color: var(--color-accent);
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 40%;
  background-repeat: no-repeat;
  transform: scale(1.05);
  transition: transform 12s ease-out;
}

.hero-bg.loaded {
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}

.hero-overlay::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--color-bg), transparent);
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: var(--nav-height);
  padding-bottom: var(--space-20);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: var(--space-6);
  padding: var(--space-2) var(--space-4);
  border: 1px solid rgba(37, 99, 235, 0.35);
  border-radius: var(--radius-full);
  background: rgba(37, 99, 235, 0.08);
  backdrop-filter: blur(4px);
  width: fit-content;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(3.5rem, 9vw, 9rem);
  font-weight: var(--weight-black);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--color-heading);
  margin-bottom: var(--space-6);
}

.hero-title-line1 {
  display: block;
}

.hero-title-line2 {
  display: block;
  color: var(--color-accent);
  text-shadow: var(--glow-accent-sm);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(241, 245, 249, 0.8);
  max-width: 560px;
  line-height: var(--leading-loose);
  margin-bottom: var(--space-10);
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  z-index: 2;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--color-accent));
  animation: scrollPulse 2s ease-in-out infinite;
}

.hero-scroll-hint span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

/* ── About ── */
.about-section {
  background: var(--gradient-section);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 5rem);
  align-items: center;
}

.about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: var(--space-4);
}

.about-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: var(--weight-extrabold);
  margin-bottom: var(--space-5);
  line-height: var(--leading-snug);
}

.about-title span {
  color: var(--color-accent);
}

.about-body p {
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
}

.about-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--weight-black);
  color: var(--color-heading);
  line-height: 1;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  letter-spacing: 0.04em;
}

.about-img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.about-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--duration-xslow) var(--ease-out);
}

.about-img-wrap:hover img {
  transform: scale(1.04);
}

.about-badge {
  position: absolute;
  bottom: var(--space-5);
  right: var(--space-5);
  background: rgba(9, 14, 24, 0.92);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.about-badge-stars {
  display: flex;
  gap: 2px;
  color: #f59e0b;
  font-size: 1rem;
}

.about-badge-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── Services ── */
.services-section {
  background: var(--color-bg-mid);
}

.tabs-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
  flex-wrap: wrap;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  min-height: 44px;
}

.tab-btn i {
  font-size: 1rem;
}

.tab-btn:hover {
  color: var(--color-heading);
  border-color: var(--color-accent);
}

.tab-btn.active {
  background: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
  box-shadow: var(--glow-accent-sm);
}

.tabs-content {
  position: relative;
}

.tab-panel {
  display: none;
  animation: fadeUp var(--duration-slow) var(--ease-out);
}

.tab-panel.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
}

.tab-panel-icon {
  display: inline-flex;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xl);
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(37, 99, 235, 0.25);
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: var(--space-5);
  box-shadow: var(--glow-accent-xs);
}

.tab-panel-title {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: var(--weight-extrabold);
  margin-bottom: var(--space-4);
}

.tab-panel-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-6);
}

.tab-panel-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.tab-panel-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.tab-panel-list li i {
  color: var(--color-accent);
  font-size: 1rem;
  flex-shrink: 0;
}

.tab-panel-visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  position: relative;
}

.tab-panel-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tab-panel-visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), transparent);
  border-radius: var(--radius-xl);
}

/* ── Gallery ── */
.gallery-section {
  background: var(--color-bg);
}

.gallery-track-wrap {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
}

.gallery-track {
  display: flex;
  transition: transform var(--duration-slow) var(--ease-out);
}

.gallery-card {
  flex: 0 0 100%;
  max-width: 100%;
}

.gallery-card figure {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: var(--radius-xl);
}

.gallery-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-xslow) var(--ease-out);
}

.gallery-card figure:hover img {
  transform: scale(1.04);
}

.gallery-card figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-6) var(--space-6) var(--space-5);
  background: linear-gradient(to top, rgba(9, 14, 24, 0.9) 0%, transparent 100%);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.gallery-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.gallery-prev,
.gallery-next {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 1.2rem;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
}

.gallery-prev:hover,
.gallery-next:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: var(--glow-accent-sm);
}

.gallery-counter {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  min-width: 48px;
  text-align: center;
}

.gallery-current {
  color: var(--color-accent-light);
  font-weight: var(--weight-bold);
}

/* ── Reviews ── */
.reviews-section {
  background: var(--color-bg-mid);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glow-card);
  border-color: rgba(37, 99, 235, 0.3);
}

.testimonial-stars {
  display: flex;
  gap: 3px;
  color: #f59e0b;
  font-size: 0.9rem;
}

.testimonial-quote {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: var(--leading-loose);
  font-style: italic;
  flex: 1;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.testimonial-name {
  font-weight: var(--weight-semibold);
  color: var(--color-heading);
  font-size: var(--text-sm);
}

.testimonial-location {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  letter-spacing: 0.04em;
}

/* ── Contact ── */
.contact-section {
  background: var(--color-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: clamp(3rem, 6vw, 5rem);
  align-items: start;
}

.contact-info-title {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: var(--weight-extrabold);
  margin-bottom: var(--space-4);
  line-height: var(--leading-snug);
}

.contact-info-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  line-height: var(--leading-loose);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-detail-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.2);
  color: var(--color-accent);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-detail-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-subtle);
  margin-bottom: 2px;
}

.contact-detail-value {
  font-size: var(--text-base);
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

.contact-detail-value a {
  color: var(--color-accent-light);
}

.contact-detail-value a:hover {
  color: var(--color-accent);
}

/* Contact form */
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
}

.form-input,
.form-textarea {
  background: var(--color-bg-mid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  transition: border-color var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-subtle);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: var(--leading-normal);
}

/* ── Footer ── */
footer {
  background: var(--color-bg-deep);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-16);
  padding-bottom: var(--space-6);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: 0.05em;
  font-size: 1.35rem;
  color: var(--color-heading);
}

.footer-logo-text span {
  color: var(--color-accent);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
  max-width: 260px;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 1rem;
  transition: all var(--duration-base) var(--ease-out);
}

.footer-social a:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
  box-shadow: var(--glow-accent-xs);
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-heading);
  margin-bottom: var(--space-5);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--duration-base) var(--ease-out);
}

.footer-links a:hover {
  color: var(--color-accent-light);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-contact-item i {
  color: var(--color-accent);
  font-size: 1rem;
  margin-top: 2px;
  flex-shrink: 0;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--color-text-subtle);
}

.built-by-badge {
  display: inline-flex;
  align-items: center;
  opacity: 0.75;
  transition: opacity var(--duration-base) var(--ease-out);
}

.built-by-badge:hover {
  opacity: 1;
}

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

  .tab-panel-visual {
    max-width: 560px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

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

  .about-img-wrap {
    order: -1;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .tabs-nav {
    gap: var(--space-2);
  }
}

@media (max-width: 480px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .about-stats {
    gap: var(--space-6);
  }
}