/* ============================================
   Om Saver International - Responsive Design
   ============================================ */

/* --- Tablet (1024px and below) --- */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .page-title {
    font-size: 2.5rem;
  }

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

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

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .innovation-intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .innovation-intro-visual {
    order: -1;
  }

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

  .venture-detail-features {
    grid-template-columns: 1fr;
  }
}

/* --- Small Tablet (768px and below) --- */
@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  .logo img {
    max-height: 60px !important;
    max-width: 220px !important;
  }

  .section {
    padding: 70px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-number {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .page-title {
    font-size: 2rem;
  }

  .page-subtitle {
    font-size: 1rem;
  }

  /* --- Navigation --- */
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--white);
    padding: 20px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
    border-bottom: 1px solid var(--gray-100);
    z-index: 999;
  }

  [data-theme="dark"] .nav {
    background: var(--dark);
    border-bottom-color: var(--gray-100);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-list {
    flex-direction: column;
    gap: 4px;
  }

  .nav-link {
    display: block;
    padding: 12px 16px;
    font-size: 1rem;
  }

  .hamburger {
    display: flex;
  }

  /* --- Grids --- */
  .about-grid,
  .ventures-grid,
  .leadership-grid,
  .testimonials-grid,
  .values-grid,
  .innovation-areas-grid,
  .mission-grid,
  .partners-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .team-full-grid {
    grid-template-columns: 1fr;
  }

  .team-card-full {
    flex-direction: column;
  }

  .team-card-full .team-image {
    width: 100%;
    height: 220px;
  }

  .cta-content h2 {
    font-size: 1.8rem;
  }

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

  .future-ventures-grid {
    grid-template-columns: 1fr;
  }

  .coming-soon-grid {
    grid-template-columns: 1fr;
  }

  .innovation-stats {
    flex-direction: column;
    gap: 16px;
  }

  .innovation-graphic {
    width: 240px;
    height: 240px;
  }

  .graphic-ring {
    width: 220px;
    height: 220px;
  }

  .graphic-ring:nth-child(2) {
    width: 180px !important;
    height: 180px !important;
  }

  .graphic-ring:nth-child(3) {
    width: 140px !important;
    height: 140px !important;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .error-code {
    font-size: 6rem;
  }

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

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

  .legal-text {
    padding: 28px 20px;
  }

  .venture-detail-header {
    flex-direction: column;
    text-align: center;
    padding: 28px 24px;
  }

  .venture-detail-body {
    padding: 28px 24px;
  }

  .page-hero {
    padding: 120px 0 60px;
  }
}

/* --- Mobile (480px and below) --- */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .logo img {
    max-height: 44px !important;
    max-width: 170px !important;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .hero-stat-number {
    font-size: 1.6rem;
  }

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

  .page-title {
    font-size: 1.7rem;
  }

  .logo-title {
    font-size: 0.85rem;
  }

  .logo-subtitle {
    font-size: 0.6rem;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .about-card,
  .mission-card,
  .value-card,
  .testimonial-card,
  .innovation-area-card {
    padding: 28px 20px;
  }

  .venture-content {
    padding: 28px 24px;
  }

  .contact-info,
  .contact-form-wrapper {
    padding: 24px 20px;
  }

  .approach-step,
  .process-step {
    flex-direction: column;
    gap: 12px;
    padding: 20px;
  }

  .step-number,
  .process-number {
    font-size: 1.5rem;
  }

  .error-code {
    font-size: 4rem;
  }

  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
  }

  .venture-detail-features .feature-item {
    flex-direction: column;
    gap: 8px;
  }

  .hero-badge {
    font-size: 0.7rem;
    padding: 4px 14px;
  }

  .section-tag {
    font-size: 0.7rem;
    padding: 4px 14px;
  }

  .partner-item {
    padding: 16px 20px;
  }

  .partner-item i {
    font-size: 1.4rem;
  }

  .partner-item span {
    font-size: 0.85rem;
  }
}

/* --- Landscape Mobile --- */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .nav {
    max-height: 70vh;
    overflow-y: auto;
  }
}

/* --- Print Styles --- */
@media print {
  .header,
  .back-to-top,
  .scroll-indicator,
  #loading-screen,
  .footer-newsletter,
  .cta-section {
    display: none !important;
  }

  .section {
    padding: 40px 0;
    page-break-inside: avoid;
  }

  .hero {
    min-height: auto;
    padding: 60px 0;
  }

  .hero-title {
    color: var(--primary) !important;
  }

  .hero-overlay {
    display: none;
  }

  .page-hero {
    padding: 60px 0 40px;
  }

  .venture-card-bg {
    display: none;
  }

  .venture-content {
    color: var(--text) !important;
    background: var(--light) !important;
  }

  .venture-content h3 {
    color: var(--primary) !important;
  }

  .btn {
    border: 1px solid var(--gray-300) !important;
    background: transparent !important;
    color: var(--text) !important;
  }

  .footer {
    background: var(--light) !important;
    color: var(--text) !important;
  }

  .footer-brand .logo-text .logo-title {
    color: var(--primary) !important;
  }

  .stats-section {
    background: var(--light) !important;
    color: var(--text) !important;
  }

  .stats-section .stat-item {
    color: var(--text) !important;
  }

  .stats-section .stat-item i {
    color: var(--secondary) !important;
  }

  .stat-number {
    color: var(--primary) !important;
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal-fade,
  .reveal-slide-up,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }

  .timeline-item {
    opacity: 1;
    transform: none;
  }
}

/* --- High Contrast / Accessibility --- */
@media (prefers-contrast: high) {
  .gradient-text {
    -webkit-text-fill-color: var(--secondary);
    background: none;
  }

  .btn-primary {
    background: var(--secondary);
  }

  .hero-overlay {
    background: rgba(11,46,89,0.95);
  }
}

/* --- Focus Styles for Accessibility --- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--secondary);
  outline-offset: 2px;
}

/* --- Skip to content (hidden but accessible) --- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  z-index: 10001;
  padding: 8px 16px;
  background: var(--secondary);
  color: var(--white);
  font-weight: 500;
}

.skip-link:focus {
  top: 0;
}