/* ============================================
   Makon JTD — Main Stylesheet
   Mobile-first | Logo palette: cyan, navy, white
   ============================================ */

/* --- CSS Variables --- */
:root {
  --color-primary: #0b1f33;
  --color-primary-light: #1a3a5c;
  --color-primary-dark: #060f1a;
  --color-accent: #38bdf8;
  --color-accent-hover: #0ea5e9;
  --color-accent-deep: #0284c7;
  --color-white: #ffffff;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-500: #64748b;
  --color-gray-700: #334155;
  --color-gray-900: #0f172a;

  --font-heading: 'Outfit', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --header-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 3px rgba(10, 37, 64, 0.08);
  --shadow-md: 0 4px 20px rgba(10, 37, 64, 0.12);
  --shadow-lg: 0 12px 40px rgba(10, 37, 64, 0.18);
  --radius: 12px;
  --radius-lg: 20px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-gray-700);
  background: var(--color-white);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 5rem 0;
}

.section--alt {
  background: var(--color-gray-50);
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section__tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section__desc {
  color: var(--color-gray-500);
  font-size: 1.0625rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}

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

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.35);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.45);
  color: var(--color-white);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.85);
}

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

.btn--full {
  width: 100%;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}

.header.scrolled {
  background: rgba(10, 37, 64, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__logo:hover {
  transform: scale(1.02);
  opacity: 0.95;
}

.nav__logo-img {
  display: block;
  height: 42px;
  width: auto;
  max-width: 150px;
  object-fit: contain;
  border-radius: 6px;
}

.nav__menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(320px, 85vw);
  height: 100vh;
  background: var(--color-primary);
  padding: 5rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  transition: right var(--transition);
  box-shadow: var(--shadow-lg);
}

.nav__menu.show {
  right: 0;
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav__link {
  display: block;
  padding: 0.75rem 0;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.85);
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-white);
  border-color: var(--color-accent);
}

.nav__lang {
  display: flex;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.lang-btn {
  flex: 1;
  padding: 0.5rem 0.375rem;
  font-size: 0.6875rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
}

.lang-btn:hover,
.lang-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav__toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(135deg, rgba(10, 37, 64, 0.88) 0%, rgba(6, 26, 46, 0.75) 100%),
    url('images/hero.jpg') center/cover no-repeat;
  padding: calc(var(--header-height) + 2rem) 0 4rem;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(6, 26, 46, 0.4) 100%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
}

.hero__badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  background: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: 50px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.5vw, 3.25rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.1875rem);
  color: rgba(255, 255, 255, 0.88);
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.25rem;
  animation: bounce 2s infinite;
  z-index: 1;
}

.hero__scroll:hover {
  color: var(--color-accent);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* --- About --- */
.about__grid {
  display: grid;
  gap: 3rem;
}

.about__text p {
  margin-bottom: 1rem;
  font-size: 1.0625rem;
  color: var(--color-gray-700);
}

.about__features {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.about__features li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-weight: 500;
  color: var(--color-primary);
}

.about__features i {
  color: var(--color-accent);
  margin-top: 0.2rem;
  flex-shrink: 0;
}

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

.stat-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.stat-card--accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-color: transparent;
  color: var(--color-white);
}

.stat-card--accent .stat-card__icon {
  background: rgba(56, 189, 248, 0.2);
  color: var(--color-accent);
}

.stat-card--accent .stat-card__number,
.stat-card--accent .stat-card__suffix {
  color: var(--color-white);
}

.stat-card--accent .stat-card__label {
  color: rgba(255, 255, 255, 0.85);
}

.stat-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 37, 64, 0.08);
  color: var(--color-primary);
  border-radius: 10px;
  font-size: 1.25rem;
}

.stat-card__number {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat-card__suffix {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat-card__label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-500);
}

/* --- Brands — 3D Partner Showroom --- */
.showroom {
  max-width: 960px;
  margin: 0 auto;
}

.showroom__hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-bottom: 1.5rem;
}

.showroom__autoplay {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: rgba(10, 37, 64, 0.06);
  border: 1px solid rgba(10, 37, 64, 0.1);
  border-radius: 50px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: opacity var(--transition);
}

.showroom__autoplay i {
  color: var(--color-accent);
  animation: spin-slow 3s linear infinite;
}

.showroom.is-paused .showroom__autoplay {
  opacity: 0.45;
}

.showroom.is-paused .showroom__autoplay i {
  animation-play-state: paused;
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.showroom__hint-text {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.showroom__hint-text i {
  color: var(--color-accent);
}

.showroom__stage {
  position: relative;
  margin-bottom: 1.5rem;
  user-select: none;
  touch-action: pan-y;
}

.showroom__floor {
  position: absolute;
  bottom: 8%;
  left: 50%;
  transform: translateX(-50%) rotateX(75deg);
  width: min(520px, 90%);
  height: 120px;
  background: radial-gradient(ellipse, rgba(10, 37, 64, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.showroom__glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.14) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transition: opacity 0.6s ease;
}

.showroom__scene {
  position: relative;
  height: 340px;
  perspective: 1100px;
  perspective-origin: 50% 40%;
  z-index: 1;
}

.showroom__ring {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 0.85s cubic-bezier(0.34, 1.2, 0.64, 1);
}

.showroom__ring[data-index="0"] { transform: rotateY(0deg); }
.showroom__ring[data-index="1"] { transform: rotateY(-120deg); }
.showroom__ring[data-index="2"] { transform: rotateY(-240deg); }

/* Partner cards in 3D ring */
.partner-card {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(240px, 72vw);
  height: 300px;
  margin-left: calc(min(240px, 72vw) / -2);
  margin-top: -150px;
  transform-style: preserve-3d;
  cursor: pointer;
  transition: filter 0.5s ease, opacity 0.5s ease;
  outline: none;
}

.partner-card:nth-child(1) {
  transform: rotateY(0deg) translateZ(min(260px, 38vw));
}

.partner-card:nth-child(2) {
  transform: rotateY(120deg) translateZ(min(260px, 38vw));
}

.partner-card:nth-child(3) {
  transform: rotateY(240deg) translateZ(min(260px, 38vw));
}

.partner-card:not(.is-active) {
  opacity: 0.45;
  filter: blur(1.5px) brightness(0.92);
  pointer-events: auto;
}

.partner-card.is-active {
  opacity: 1;
  filter: none;
  z-index: 2;
}

.partner-card__face {
  position: relative;
  width: 100%;
  height: 100%;
  background: linear-gradient(160deg, var(--color-white) 0%, var(--color-gray-50) 100%);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: var(--shadow-lg);
  backface-visibility: hidden;
  transition: transform 0.5s cubic-bezier(0.34, 1.2, 0.64, 1), box-shadow 0.5s ease, border-color 0.4s ease;
  overflow: hidden;
}

.partner-card.is-active .partner-card__face {
  transform: scale(1.06) translateZ(20px);
  border-color: var(--color-accent);
  box-shadow:
    0 20px 50px rgba(10, 37, 64, 0.2),
    0 0 0 1px rgba(56, 189, 248, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.partner-card:hover .partner-card__face {
  border-color: rgba(56, 189, 248, 0.45);
}

.partner-card__badge {
  position: absolute;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.3rem 0.75rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: 50px;
  white-space: nowrap;
}

.partner-card__logo {
  width: 100%;
  max-width: 180px;
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 1.5rem 0 1rem;
}

.partner-card__logo img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: transform 0.5s ease;
}

.partner-card.is-active .partner-card__logo img {
  transform: scale(1.05);
}

.partner-card__name {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-primary);
}

.partner-card__shine {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(255, 255, 255, 0.4) 45%,
    transparent 50%
  );
  transform: translateX(-100%) rotate(25deg);
  transition: transform 0.8s ease;
  pointer-events: none;
}

.partner-card.is-active .partner-card__shine {
  transform: translateX(100%) rotate(25deg);
}

/* Navigation arrows */
.showroom__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: var(--color-white);
  color: var(--color-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--shadow-md);
  z-index: 10;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.showroom__nav:hover {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
  transform: translateY(-50%) scale(1.08);
}

.showroom__nav--prev { left: 0; }
.showroom__nav--next { right: 0; }

/* Dots */
.showroom__dots {
  display: flex;
  justify-content: center;
  gap: 0.625rem;
  margin-bottom: 2rem;
}

.showroom__dot {
  position: relative;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-gray-300);
  overflow: hidden;
  transition: transform var(--transition), background var(--transition), width var(--transition);
}

.showroom__dot.is-active {
  background: var(--color-gray-200);
  width: 36px;
  border-radius: 5px;
}

.showroom__dot.is-active::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-accent);
  border-radius: inherit;
  transform: scaleX(0);
  transform-origin: left center;
  animation: dot-fill var(--auto-interval, 4s) linear forwards;
}

.showroom.is-paused .showroom__dot.is-active::after {
  animation-play-state: paused;
}

@keyframes dot-fill {
  to { transform: scaleX(1); }
}

.showroom__dot:hover:not(.is-active) {
  background: var(--color-primary-light);
  transform: scale(1.2);
}

/* Detail panel */
.showroom__detail {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.showroom__detail.is-updating {
  opacity: 0.6;
  transform: translateY(6px);
}

.showroom__detail-header {
  margin-bottom: 1rem;
}

.showroom__detail-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.showroom__detail-name {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  color: var(--color-primary);
}

.showroom__detail-desc {
  font-size: 1.0625rem;
  color: var(--color-gray-500);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 1.5rem;
}

.showroom__detail-btn {
  min-width: 200px;
}

/* Paused state for auto-rotate */
.showroom.is-paused .showroom__glow {
  opacity: 0.5;
}

.showroom.is-auto-playing .showroom__glow {
  animation: glow-pulse 4s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.08); }
}

@media (prefers-reduced-motion: reduce) {
  .showroom__ring,
  .partner-card__face,
  .partner-card__shine,
  .showroom__detail {
    transition: none;
  }

  .showroom__hint i {
    animation: none;
  }

  .showroom__autoplay i,
  .showroom__dot.is-active::after,
  .showroom.is-auto-playing .showroom__glow {
    animation: none;
  }
}

/* --- Contact --- */
.contact__grid {
  display: grid;
  gap: 2.5rem;
}

.contact__item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact__icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 37, 64, 0.08);
  color: var(--color-primary);
  border-radius: 10px;
  font-size: 1.125rem;
}

.contact__item h4 {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gray-500);
  margin-bottom: 0.25rem;
}

.contact__item p,
.contact__item a {
  font-size: 1rem;
  color: var(--color-primary);
  font-weight: 500;
}

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

.contact__map {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-top: 0.5rem;
}

.contact__map iframe {
  display: block;
  filter: grayscale(20%);
}

.contact__form {
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.form__group {
  margin-bottom: 1.25rem;
}

.form__group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.form__group input,
.form__group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-gray-900);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(10, 37, 64, 0.12);
}

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

.form__status {
  margin-top: 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: center;
  min-height: 1.5rem;
}

.form__status.success {
  color: #15803d;
}

.form__status.error {
  color: #b91c1c;
}

/* --- Footer --- */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 4rem 0 0;
}

.footer__grid {
  display: grid;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
  display: inline-block;
  margin-bottom: 1rem;
}

.footer__logo-img {
  display: block;
  height: 52px;
  width: auto;
  max-width: 170px;
  object-fit: contain;
  border-radius: 6px;
  transition: transform var(--transition), opacity var(--transition);
}

.footer__logo:hover .footer__logo-img {
  transform: scale(1.02);
  opacity: 0.92;
}

.footer__brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
  max-width: 320px;
}

.footer__social {
  display: flex;
  gap: 0.75rem;
}

.footer__social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--color-white);
  transition: background var(--transition), transform var(--transition);
}

.footer__social a:hover {
  background: var(--color-accent);
  transform: translateY(-3px);
}

.footer__links h4,
.footer__contact h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 1rem;
}

.footer__links ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

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

.footer__contact p {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.9375rem;
  margin-bottom: 0.625rem;
}

.footer__contact i {
  color: var(--color-accent);
  margin-top: 0.2rem;
  width: 16px;
}

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

.footer__bottom {
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

/* --- Back to top --- */
.back-to-top {
  position: fixed;
  bottom: 5.5rem;
  right: 1.25rem;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-3px);
}

/* --- WhatsApp button --- */
.whatsapp-btn {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  width: 56px;
  height: 56px;
  background: #25d366;
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45);
  z-index: 900;
  transition: transform var(--transition), box-shadow var(--transition);
}

.whatsapp-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.55);
  color: var(--color-white);
}

/* --- Scroll reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* --- Tablet (768px+) --- */
@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }

  .section {
    padding: 6rem 0;
  }

  .nav__toggle {
    display: none;
  }

  .nav__menu {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    padding: 0;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    box-shadow: none;
  }

  .nav__list {
    flex-direction: row;
    gap: 0.5rem;
  }

  .nav__link {
    padding: 0.5rem 0.875rem;
    font-size: 0.9375rem;
    border-bottom: none;
    border-radius: 6px;
  }

  .nav__link:hover,
  .nav__link.active {
    background: rgba(255, 255, 255, 0.1);
    border-color: transparent;
  }

  .nav__lang {
    padding-top: 0;
    border-top: none;
    gap: 0.25rem;
  }

  .lang-btn {
    flex: none;
    padding: 0.375rem 0.625rem;
    font-size: 0.6875rem;
    white-space: nowrap;
  }

  .about__grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
  }

  .showroom__scene {
    height: 380px;
  }

  .showroom__nav--prev { left: -0.5rem; }
  .showroom__nav--next { right: -0.5rem; }

  .contact__grid {
    grid-template-columns: 1fr 1.1fr;
    gap: 3rem;
    align-items: start;
  }

  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

/* --- Desktop (1024px+) --- */
@media (min-width: 1024px) {
  :root {
    --header-height: 80px;
  }

  .showroom__scene {
    height: 420px;
    perspective: 1400px;
  }

  .partner-card {
    width: 280px;
    height: 340px;
    margin-left: -140px;
    margin-top: -170px;
  }

  .partner-card:nth-child(1) { transform: rotateY(0deg) translateZ(360px); }
  .partner-card:nth-child(2) { transform: rotateY(120deg) translateZ(360px); }
  .partner-card:nth-child(3) { transform: rotateY(240deg) translateZ(360px); }

  .showroom__detail {
    padding: 2.5rem 3rem;
  }

  .nav__logo-img {
    height: 46px;
    max-width: 165px;
  }

  .footer__logo-img {
    height: 58px;
    max-width: 180px;
  }

  .hero__cta .btn {
    min-width: 180px;
  }

  .about__stats {
    gap: 1.25rem;
  }

  .stat-card {
    padding: 2rem 1.5rem;
  }

  .back-to-top {
    right: 2rem;
    bottom: 6rem;
  }

  .whatsapp-btn {
    right: 2rem;
    bottom: 2rem;
  }
}