/* ========================================
   RESPONSIVE DESIGN - BIO MINH TÂM
   ======================================== */

/* Desktop tuning for solution page media carousels */
@media (min-width: 1025px) {
  body[data-page="solution"] .page-hero {
    padding: calc(var(--spacing-4xl) + 80px) 0 var(--spacing-3xl);
  }

  body[data-page="solution"] .section-padding {
    padding-top: var(--spacing-4xl);
    padding-bottom: var(--spacing-4xl);
  }

  body[data-page="solution"] .timeline-item {
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
  }

  body[data-page="solution"] .timeline-icon {
    width: 68px;
    height: 68px;
    background: linear-gradient(145deg, #1fb25a 0%, #138744 100%);
    border-color: #138744;
    box-shadow: 0 12px 24px rgba(19, 135, 68, 0.28);
  }

  body[data-page="solution"] .timeline-number {
    font-size: var(--font-size-3xl);
    color: #ffffff;
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(10, 58, 29, 0.35);
  }

  body[data-page="solution"] .timeline-icon .timeline-number {
    color: #ffffff;
  }

  body[data-page="solution"] .timeline-content {
    padding: var(--spacing-xl);
  }

  body[data-page="solution"] .timeline-content h3 {
    font-size: clamp(1.65rem, 2.2vw, 2.1rem);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: #123722;
  }

  body[data-page="solution"] .timeline-content p {
    font-size: var(--font-size-base);
    line-height: 1.55;
  }

  body[data-page="solution"] .timeline-connector {
    height: 32px;
    margin: calc(var(--spacing-xs) * -1) auto;
    left: 34px;
  }

  body[data-page="solution"] .media-carousel {
    margin-top: var(--spacing-3xl);
    width: min(100%, 860px);
  }

  body[data-page="solution"] .media-carousel-compact {
    width: min(100%, 760px);
  }

  body[data-page="solution"] .media-carousel-frame {
    aspect-ratio: 16 / 8.5;
    max-height: 430px;
  }

  body[data-page="solution"] .media-carousel-compact .media-carousel-frame {
    aspect-ratio: 16 / 8;
    max-height: 360px;
  }

  body[data-page="solution"] .media-carousel .process-media-card img {
    object-fit: contain;
    background: #f4f7f4;
  }

  body[data-page="solution"] .equipment-media {
    margin-top: var(--spacing-3xl);
  }

  body[data-page="solution"] .equipment-media-header {
    margin-bottom: var(--spacing-lg);
  }

  body[data-page="solution"] .footer.footer-with-locations {
    padding: var(--spacing-2xl) 0 var(--spacing-md);
  }

  body[data-page="solution"] .footer.footer-with-locations .footer-locations .location-card {
    grid-template-columns: 152px 1fr;
    min-height: 112px;
  }

  body[data-page="solution"] .footer.footer-with-locations .footer-locations .location-map {
    min-height: 112px;
  }

  body[data-page="solution"] .footer.footer-with-locations .footer-bottom {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-sm);
  }
}

/* Tablet Landscape (max-width: 1024px) */
@media (max-width: 1024px) {
  :root {
    --font-size-7xl: 3.5rem;
    --font-size-6xl: 3rem;
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --spacing-5xl: 6rem;
    --spacing-4xl: 4rem;
  }

  .section-padding {
    padding-top: var(--spacing-4xl);
    padding-bottom: var(--spacing-4xl);
  }

  .hero-container {
    gap: var(--spacing-3xl);
  }

  .product-3d {
    width: 400px;
    height: 400px;
  }

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

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

/* Tablet Portrait (max-width: 768px) */
@media (max-width: 768px) {
  :root {
    --font-size-7xl: 2.5rem;
    --font-size-6xl: 2.25rem;
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
    --container-padding: 1.5rem;
    --spacing-5xl: 4rem;
    --spacing-4xl: 3rem;
    --spacing-3xl: 2.5rem;
  }

  /* Navigation */
  .nav-container {
    height: 70px;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(255, 255, 255, 0.98);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--spacing-3xl) var(--spacing-xl);
    transition: left 0.3s ease;
    overflow-y: auto;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
  }

  /* Reset CTA pill style for mobile menu — full-width text link */
  .nav-menu .btn-primary-small {
    background: transparent !important;
    color: var(--color-primary) !important;
    border-radius: 0;
    padding: var(--spacing-md) !important;
    font-size: var(--font-size-lg);
    font-weight: 600;
    width: 100%;
    text-align: center;
  }
  .nav-menu .btn-primary-small:hover {
    background: rgba(29, 168, 82, 0.06) !important;
    color: var(--color-primary) !important;
    transform: none;
  }

  .nav-toggle {
    display: flex;
    z-index: 100;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

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

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  /* Hero Section */
  .hero {
    min-height: 100svh;
    padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-3xl);
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .hero-content {
    order: 1;
    max-width: 100%;
    text-align: center;
  }

  .hero-title {
    font-size: var(--font-size-5xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .hero-cta {
    justify-content: center;
    gap: var(--spacing-md);
  }

  .hero-product {
    order: 2;
  }

  .product-3d {
    width: min(92vw, 360px);
    height: auto;
    padding: 8px;
  }

  .tea-bag {
    width: 100px;
    height: 100px;
  }

  .scroll-indicator {
    display: none;
  }

  /* Problem Section */
  .problem-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  /* Solution Section */
  .timeline-item {
    grid-template-columns: 60px 1fr;
    gap: var(--spacing-md);
  }

  .timeline-number {
    display: none;
  }

  .timeline-icon {
    width: 60px;
    height: 60px;
  }

  .timeline-icon svg {
    width: 32px;
    height: 32px;
  }

  .timeline-connector {
    height: 40px;
    left: 30px;
  }

  /* Product Intro */
  .product-intro-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
  }

  .macro-image {
    height: 400px;
  }

  /* Innovation Section */
  .innovation-roadmap {
    grid-template-columns: 1fr;
  }

  .innovation-arrow {
    display: none;
  }

  /* Showcase */
  .showcase-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
  }

  .product-card.featured {
    transform: scale(1);
  }

  .product-card.featured:hover {
    transform: translateY(-15px) scale(1);
  }

  /* Impact Section */
  .impact-dashboard {
    grid-template-columns: 1fr;
  }

  .stat-number {
    font-size: var(--font-size-5xl);
  }

  .quote-text {
    font-size: var(--font-size-xl);
  }

  /* Business Model */
  .business-canvas {
    grid-template-columns: 1fr;
  }

  /* Roadmap */
  .roadmap-item {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .roadmap-quarter {
    font-size: var(--font-size-xl);
  }

  .roadmap-status {
    align-self: flex-start;
  }

  .roadmap-connector {
    display: none;
  }

  /* CTA Section */
  .cta-title {
    font-size: var(--font-size-4xl);
  }

  .cta-subtitle {
    font-size: var(--font-size-base);
  }

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

  .btn-primary-large,
  .btn-outline-large {
    width: 100%;
    justify-content: center;
  }

  .cta-stats {
    flex-direction: column;
    gap: var(--spacing-2xl);
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
  }

  .footer-col:first-child {
    text-align: center;
  }

  .footer-social {
    justify-content: center;
  }

  /* Modal */
  .modal-content {
    padding: var(--spacing-2xl);
  }

  .modal-title {
    font-size: var(--font-size-2xl);
  }
}

/* Mobile (max-width: 480px) */
@media (max-width: 480px) {
  :root {
    --font-size-7xl: 2rem;
    --font-size-6xl: 1.875rem;
    --font-size-5xl: 1.75rem;
    --font-size-4xl: 1.5rem;
    --font-size-3xl: 1.25rem;
    --font-size-2xl: 1.125rem;
    --container-padding: 1rem;
    --spacing-5xl: 3rem;
    --spacing-4xl: 2.5rem;
    --spacing-3xl: 2rem;
    --spacing-2xl: 1.5rem;
  }

  /* Typography */
  h1 {
    font-size: var(--font-size-5xl);
    line-height: 1.2;
  }

  h2 {
    font-size: var(--font-size-4xl);
  }

  h3 {
    font-size: var(--font-size-3xl);
  }

  /* Navigation */
  .logo-text {
    font-size: var(--font-size-xl);
  }

  /* Hero */
  .hero {
    min-height: 0;
    padding: calc(70px + var(--spacing-lg)) 0 var(--spacing-2xl);
  }

  .hero-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-2xl);
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-sm);
  }

  .hero-cta .btn-primary,
  .hero-cta .btn-outline {
    width: 100%;
    justify-content: center;
  }

  .product-3d {
    width: min(90vw, 320px);
    height: auto;
  }

  .tea-bag {
    width: 80px;
    height: 80px;
  }

  .scroll-indicator {
    display: none;
  }

  /* Section Headers */
  .section-title {
    font-size: var(--font-size-3xl);
  }

  .section-subtitle {
    font-size: var(--font-size-base);
  }

  .section-divider {
    width: 60px;
    height: 3px;
  }

  /* Problem Cards */
  .problem-card {
    padding: var(--spacing-xl);
  }

  .problem-icon {
    width: 48px;
    height: 48px;
  }

  .problem-icon svg {
    width: 48px;
    height: 48px;
  }

  .problem-title {
    font-size: var(--font-size-xl);
  }

  /* Timeline */
  .timeline-item {
    grid-template-columns: 50px 1fr;
  }

  .timeline-icon {
    width: 50px;
    height: 50px;
  }

  .timeline-icon svg {
    width: 28px;
    height: 28px;
  }

  .timeline-content {
    padding: var(--spacing-lg);
  }

  .timeline-title {
    font-size: var(--font-size-xl);
  }

  .timeline-description {
    font-size: var(--font-size-sm);
  }

  .timeline-connector {
    left: 25px;
  }

  .solution-features {
    flex-direction: column;
    align-items: stretch;
  }

  .feature-badge {
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
  }

  /* Product Intro */
  .macro-image {
    height: 300px;
  }

  .product-intro-title {
    font-size: var(--font-size-4xl);
  }

  .info-item {
    margin-bottom: var(--spacing-xl);
  }

  .info-title {
    font-size: var(--font-size-lg);
  }

  .info-text {
    font-size: var(--font-size-sm);
  }

  /* Innovation */
  .innovation-card {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .innovation-icon-large {
    width: 60px;
    height: 60px;
  }

  .innovation-icon-large svg {
    width: 60px;
    height: 60px;
  }

  .innovation-title {
    font-size: var(--font-size-xl);
  }

  .innovation-description {
    font-size: var(--font-size-sm);
  }

  /* Showcase */
  .product-card-image {
    height: 280px;
  }

  .product-card-content {
    padding: var(--spacing-xl);
  }

  .product-card-title {
    font-size: var(--font-size-2xl);
  }

  .product-card button {
    padding: var(--spacing-md) var(--spacing-xl);
  }

  /* Impact */
  .impact-stat {
    padding: var(--spacing-2xl);
  }

  .stat-icon {
    width: 48px;
    height: 48px;
  }

  .stat-icon svg {
    width: 48px;
    height: 48px;
  }

  .stat-number {
    font-size: var(--font-size-4xl);
  }

  .stat-label {
    font-size: var(--font-size-base);
  }

  .impact-quote {
    padding: var(--spacing-2xl);
  }

  .quote-text {
    font-size: var(--font-size-lg);
  }

  /* Business */
  .canvas-item {
    padding: var(--spacing-2xl);
  }

  .canvas-icon {
    width: 48px;
    height: 48px;
  }

  .canvas-icon svg {
    width: 48px;
    height: 48px;
  }

  .canvas-title {
    font-size: var(--font-size-xl);
  }

  .canvas-description {
    font-size: var(--font-size-sm);
  }

  /* Roadmap */
  .roadmap-item {
    padding: var(--spacing-xl);
  }

  .roadmap-quarter {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
  }

  .roadmap-title {
    font-size: var(--font-size-2xl);
  }

  .roadmap-tasks li {
    font-size: var(--font-size-sm);
  }

  /* CTA */
  .cta-title {
    font-size: var(--font-size-3xl);
  }

  .cta-subtitle {
    font-size: var(--font-size-sm);
  }

  .cta-stat-number {
    font-size: var(--font-size-4xl);
  }

  .cta-stat-label {
    font-size: var(--font-size-sm);
  }

  /* Footer */
  .footer {
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
  }

  .footer-logo {
    font-size: var(--font-size-2xl);
  }

  .footer-title {
    font-size: var(--font-size-lg);
  }

  .footer-qr img {
    width: 120px;
    height: 120px;
  }

  /* Buttons */
  .btn-primary,
  .btn-secondary,
  .btn-outline {
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: var(--font-size-sm);
  }

  .btn-primary-large,
  .btn-outline-large {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-base);
  }

  /* Modal */
  .modal {
    padding: var(--spacing-md);
  }

  .modal-content {
    padding: var(--spacing-xl);
    max-height: 85vh;
  }

  .modal-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
  }

  .contact-form {
    gap: var(--spacing-md);
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
}

@media (max-width: 640px) {
  body[data-page="solution"] .footer.footer-with-locations .footer-locations .location-card {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  body[data-page="solution"] .footer.footer-with-locations .footer-locations .location-map {
    display: none;
  }

  body[data-page="solution"] .footer.footer-with-locations .footer-locations .location-content {
    padding: 12px 14px;
  }

  body[data-page="solution"] .footer.footer-with-locations .footer-locations .location-title {
    font-size: var(--font-size-base);
    line-height: 1.3;
  }
}

/* Landscape Mode for Mobile */
@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    min-height: 0;
    padding: calc(70px + var(--spacing-2xl)) 0 var(--spacing-2xl);
  }

  .product-3d {
    width: 200px;
    height: 200px;
  }

  .scroll-indicator {
    display: none;
  }

  .nav-menu {
    padding: var(--spacing-xl);
  }
}

/* High Resolution Displays */
@media (min-width: 1920px) {
  :root {
    --container-max-width: 1600px;
  }

  .section-padding {
    padding-top: 10rem;
    padding-bottom: 10rem;
  }
}

/* Print Styles */
@media print {
  .nav,
  .nav-toggle,
  .scroll-indicator,
  .hero-video-container,
  .cta-buttons,
  .footer-social,
  .modal {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .section-padding {
    padding: 2rem 0;
  }

  .page-break {
    page-break-before: always;
  }
}

/* Reduce Motion for Accessibility */
@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;
  }

  .floating,
  .smoke,
  .scroll-indicator {
    animation: none !important;
  }
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
  /* Uncomment to enable dark mode */
  /*
  :root {
    --color-background: #1a1a1a;
    --color-text: #f6efe8;
  }

  body {
    background: var(--color-background);
    color: var(--color-text);
  }
  */
}