/* ==========================================================================
   Tires & Wheels WMS — Landing Page
   Light mode = default, .dark on <body> = dark mode
   ========================================================================== */

/* ===== CSS VARIABLES ===== */
:root {
  --color-primary: #F5A623;
  --color-primary-hover: #E8950A;
  --color-primary-light: #FFECD2;
  --color-primary-rgb: 245, 166, 35;
  --color-bg: #FFFFFF;
  --color-bg-secondary: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #1E293B;
  --color-text-secondary: #64748B;
  --color-text-muted: #94A3B8;
  --color-border: #E2E8F0;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: 0.3s ease;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body.dark {
  --color-bg: #0F172A;
  --color-bg-secondary: #1E293B;
  --color-surface: #1E293B;
  --color-text: #F8FAFC;
  --color-text-secondary: #94A3B8;
  --color-text-muted: #64748B;
  --color-border: #334155;
  --color-primary-light: #3D2800;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.6);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  transition: background-color var(--transition), color var(--transition);
}

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

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

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   NAVIGATION
   Light: dark text over light hero
   Dark:  white text over dark hero
   ========================================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: background-color var(--transition), box-shadow var(--transition), padding var(--transition);
}

.nav__container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
}

/* --- Logo: light = original (dark), dark = inverted (white) --- */
.nav__logo-img {
  height: 40px;
  width: auto;
  transition: filter var(--transition);
}

.dark .nav__logo-img {
  filter: brightness(0) invert(1);
}

/* When scrolled: light = original, dark = inverted */
.nav--scrolled .nav__logo-img {
  filter: none;
}

.dark .nav--scrolled .nav__logo-img {
  filter: brightness(0) invert(1);
}

/* --- Nav links --- */
.nav__links {
  display: flex;
  gap: 32px;
}

.nav__link {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav__link:hover::after {
  width: 100%;
}

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

.dark .nav__link {
  color: rgba(255,255,255,0.75);
}

.dark .nav__link:hover {
  color: #FFFFFF;
}

/* --- Nav scrolled --- */
.nav--scrolled {
  background-color: var(--color-surface);
  box-shadow: var(--shadow-md);
  padding: 8px 0;
}

.nav--scrolled .nav__link {
  color: var(--color-text-secondary);
}

.nav--scrolled .nav__link:hover {
  color: var(--color-primary);
}

.dark .nav--scrolled .nav__link {
  color: var(--color-text-secondary);
}

.dark .nav--scrolled .nav__link:hover {
  color: var(--color-primary);
}

/* --- Nav actions --- */
.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* --- Mobile toggle --- */
.nav__mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition);
}

.dark .nav__mobile-toggle span {
  background: rgba(255,255,255,0.9);
}

.nav--scrolled .nav__mobile-toggle span {
  background: var(--color-text);
}

/* ==========================================================================
   THEME TOGGLE
   ========================================================================== */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition);
}

.theme-toggle:hover {
  background: var(--color-border);
}

.dark .theme-toggle {
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  color: #FFFFFF;
}

.dark .theme-toggle:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.3);
}

.nav--scrolled .theme-toggle {
  border-color: var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.dark .nav--scrolled .theme-toggle {
  border-color: var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

/* Sun icon visible in light, hidden in dark */
.theme-toggle__icon--moon {
  display: none;
}

.dark .theme-toggle__icon--sun {
  display: none;
}

.dark .theme-toggle__icon--moon {
  display: block;
}

/* ==========================================================================
   LOCALE SWITCHER
   ========================================================================== */
.locale-switcher {
  position: relative;
}

.locale-switcher__trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

.locale-switcher__trigger:hover {
  background: var(--color-border);
}

.dark .locale-switcher__trigger {
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  color: #FFFFFF;
}

.dark .locale-switcher__trigger:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.3);
}

.nav--scrolled .locale-switcher__trigger {
  border-color: var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.dark .nav--scrolled .locale-switcher__trigger {
  border-color: var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.locale-switcher__flag {
  display: flex;
  align-items: center;
  line-height: 1;
}

.locale-switcher__flag svg {
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.1);
}

.locale-switcher__chevron {
  transition: transform var(--transition);
  opacity: 0.7;
}

.locale-switcher:has(.locale-switcher__menu--open) .locale-switcher__chevron {
  transform: rotate(180deg);
}

.locale-switcher__menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 1001;
}

.locale-switcher__menu--open {
  display: block;
  animation: fadeInDown 0.15s ease;
}

.locale-switcher__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background-color var(--transition);
  text-decoration: none;
}

.locale-switcher__item:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.locale-switcher__item--active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}

.locale-switcher__item--active:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

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

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  padding: 10px 24px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
}

.btn--primary {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.4);
}

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

.btn--outline:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

.dark .btn--outline {
  color: #FFFFFF;
  border-color: rgba(255,255,255,0.4);
}

.dark .btn--outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  color: #FFFFFF;
}

.btn--white {
  background: #FFFFFF;
  color: var(--color-primary);
  border-color: #FFFFFF;
}

.btn--white:hover {
  background: #F8FAFC;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: var(--color-primary-hover);
}

.btn--sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn--lg {
  padding: 14px 32px;
  font-size: 1.05rem;
}

/* ==========================================================================
   HERO
   Light: warm cantaloupe gradient, dark text
   Dark:  deep navy gradient, white text
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #FFFBF5 0%, #FFF0DC 40%, #FFE0B2 100%);
  transition: background var(--transition);
}

.dark .hero__gradient {
  background: linear-gradient(135deg, #0F172A 0%, #1E3A5F 50%, #2D1B00 100%);
}

.hero__pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(245, 166, 35, 0.12) 1px, transparent 1px);
  background-size: 40px 40px;
}

.dark .hero__pattern {
  background-image: radial-gradient(rgba(245, 166, 35, 0.08) 1px, transparent 1px);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 140px 24px 80px;
  max-width: 800px;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  animation: fadeInUp 0.8s ease both;
}

.dark .hero__title {
  color: #FFFFFF;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease 0.15s both;
}

.dark .hero__subtitle {
  color: rgba(255,255,255,0.75);
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.3s both;
}

/* ==========================================================================
   SECTION HEADER
   ========================================================================== */
.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 60px;
}

.section-header__title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-header__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   FEATURES
   ========================================================================== */
.features {
  padding: 100px 0;
  background: var(--color-bg);
  transition: background-color var(--transition);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(var(--color-primary-rgb), 0.3);
}

.feature-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  margin-bottom: 20px;
}

.feature-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.feature-card__text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   HOW IT WORKS
   ========================================================================== */
.how-it-works {
  padding: 100px 0;
  background: var(--color-bg-secondary);
  transition: background-color var(--transition);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 200px;
  max-width: 260px;
  text-align: center;
  padding: 0 16px;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #FFFFFF;
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 20px;
  box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.35);
}

.step__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.step__text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.step__connector {
  width: 60px;
  height: 2px;
  background: var(--color-border);
  margin-top: 28px;
  flex-shrink: 0;
}

/* ==========================================================================
   CTA
   ========================================================================== */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 32px 32px;
}

.cta-section__content {
  position: relative;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-section__title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.cta-section__subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  line-height: 1.7;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  padding: 64px 0 32px;
  background: #0F172A;
  color: rgba(255,255,255,0.7);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer__logo {
  height: 36px;
  filter: brightness(0) invert(1);
  margin-bottom: 16px;
}

.footer__description {
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 340px;
}

.footer__heading {
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer__links ul,
.footer__contact ul {
  list-style: none;
}

.footer__links li,
.footer__contact li {
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.footer__links a,
.footer__contact a {
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}

.footer__links a:hover,
.footer__contact a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
}

.footer__bottom a {
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}

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

.footer__credit {
  margin-top: 8px;
  font-size: 0.8rem;
  opacity: 0.6;
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-surface);
    padding: 16px 24px;
    gap: 0;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-border);
  }

  .nav__links.nav__links--open {
    display: flex;
  }

  .nav__link {
    color: var(--color-text);
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav__link:last-child {
    border-bottom: none;
  }

  .nav__mobile-toggle {
    display: flex;
    order: 10;
  }

  .nav__actions {
    gap: 8px;
  }

  .nav__actions .btn--sm {
    display: none;
  }

  .features__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .steps {
    flex-direction: column;
    align-items: center;
  }

  .step {
    max-width: 100%;
  }

  .step__connector {
    width: 2px;
    height: 40px;
    margin-top: 0;
    margin-bottom: 0;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero__content {
    padding: 120px 16px 60px;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

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