/* ========================================
   Alliance Trade Solutions
   Professional Dark Navy & Red Theme
   ======================================== */

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

:root {
  --color-bg: #0d1117;
  --color-bg-elevated: #161b22;
  --color-bg-card: #1c2128;
  --color-bg-card-hover: #222830;
  --color-surface: #21262d;
  --color-border: #30363d;
  --color-border-light: #3d444d;
  --color-text: #e6edf3;
  --color-text-secondary: #8b949e;
  --color-text-muted: #6e7681;
  --color-accent: #e00000;
  --color-accent-light: #f01010;
  --color-accent-dark: #c00000;
  --color-accent-glow: rgba(224, 0, 0, 0.15);
  --color-accent-glow-strong: rgba(224, 0, 0, 0.3);
  --color-white: #ffffff;
  --color-navy: #1a1a2e;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img {
  max-width: 100%;
  display: block;
  -webkit-user-drag: none;
  user-select: none;
  -webkit-user-select: none;
  pointer-events: auto;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.hidden {
  display: none;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.nav.scrolled {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo-img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: #4a5568;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-link:hover {
  color: #1a202c;
  background: rgba(0, 0, 0, 0.05);
}

.nav-link-cta {
  background: var(--color-accent);
  color: var(--color-white);
  margin-left: 8px;
}

.nav-link-cta:hover {
  background: var(--color-accent-light);
  color: var(--color-white);
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
  border-left: 1px solid rgba(0, 0, 0, 0.1);
  padding-left: 16px;
}

.lang-link {
  display: flex;
  align-items: center;
  padding: 4px;
  border-radius: 50%;
  transition: var(--transition);
  opacity: 0.5;
}

.lang-link:hover {
  opacity: 0.8;
}

.lang-link.active {
  opacity: 1;
  box-shadow: 0 0 0 2px var(--color-accent);
}

.lang-flag {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #1a202c;
  border-radius: 2px;
  transition: var(--transition);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 0 20px var(--color-accent-glow);
}

.btn-primary:hover {
  background: var(--color-accent-light);
  box-shadow: 0 0 30px var(--color-accent-glow-strong);
  transform: translateY(-1px);
}

.btn-full {
  width: 100%;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-video-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}

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

.hero-video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(13, 17, 23, 0.7) 0%, rgba(13, 17, 23, 0.85) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 120px 24px 80px;
  max-width: 800px;
}

.hero-flags {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  animation: fadeInUp 0.6s ease;
}

.hero-flag {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.hero-flag-divider {
  width: 32px;
  height: 2px;
  background: var(--color-accent);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s both;
}

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

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-features {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.hero-feature svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

.hero-phone {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  animation: fadeInUp 0.6s ease 0.5s both;
}

.hero-phone svg {
  color: var(--color-accent);
}

.hero-phone a {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  transition: var(--transition);
}

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

/* --- Sections --- */
.section {
  padding: 100px 0;
}

.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.section-title-center {
  text-align: center;
}

/* --- About --- */
.about {
  border-top: 1px solid var(--color-border);
}

.about-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
  margin-top: 48px;
}

.about-content p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.core-values h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.core-values ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.core-values li {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  padding-left: 20px;
  position: relative;
}

.core-values li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.about-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

/* --- Services --- */
.services {
  border-top: 1px solid var(--color-border);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition);
}

.service-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-light);
  transform: translateY(-2px);
}

.service-icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.service-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* --- Testimonials --- */
.testimonials {
  border-top: 1px solid var(--color-border);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.testimonial-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.testimonial-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-light);
  transform: translateY(-2px);
}

.testimonial-stars {
  color: #f59e0b;
  font-size: 1.125rem;
  letter-spacing: 2px;
}

.testimonial-text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  font-style: italic;
  flex: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent-glow);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.testimonial-author strong {
  display: block;
  font-size: 0.9375rem;
}

.testimonial-author span {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

/* --- FAQ --- */
.faq {
  border-top: 1px solid var(--color-border);
}

.faq-list {
  max-width: 800px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--color-accent);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

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

.faq-chevron {
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--color-accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 24px 20px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* --- Contact --- */
.contact {
  border-top: 1px solid var(--color-border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  margin-top: 48px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

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

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

.contact-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-info-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.contact-detail svg {
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-detail strong {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 4px;
}

.contact-detail a,
.contact-detail span {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  transition: var(--transition);
}

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

/* --- Footer --- */
.footer {
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  padding: 40px 0;
  background: #ffffff;
}

.footer-simple {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.footer-logo-img {
  height: 36px;
  width: auto;
}

.footer-nav {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.footer-nav a {
  color: #4a5568;
  font-size: 0.875rem;
  transition: var(--transition);
}

.footer-nav a:hover {
  color: #1a202c;
}

.footer-copy {
  color: #9ca3af;
  font-size: 0.8125rem;
}

.footer-credit {
  color: #c0c0c0;
  font-size: 0.75rem;
}

.footer-credit a {
  color: #9ca3af;
  transition: var(--transition);
}

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

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .about-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-images {
    max-width: 500px;
  }

}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    padding: 12px 16px;
    width: 100%;
  }

  .nav-link-cta {
    margin-left: 0;
    text-align: center;
    margin-top: 8px;
  }

  .lang-toggle {
    border-left: none;
    padding-left: 0;
    justify-content: center;
    margin-left: 0;
    margin-top: 8px;
    padding-top: 12px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
  }

  .section {
    padding: 80px 0;
  }

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

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

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

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

  .about-img {
    height: 250px;
  }

  .hero-features {
    align-items: flex-start;
    text-align: left;
    padding-left: 16px;
  }

}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .service-card {
    padding: 24px;
  }

  .faq-question {
    font-size: 0.9375rem;
    padding: 16px 20px;
  }
}