/* ===================================
   RAIN Lab Responsive Styles
   Mobile-first approach with breakpoints
   =================================== */

/* ============= Tablet & Below (< 1024px) ============= */

@media (max-width: 1023px) {

  /* Typography adjustments */
  h1 {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

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

  /* Spacing adjustments */
  :root {
    --section-padding-vertical: 3rem;
  }

  /* Research Leader */
  .leader-content {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .leader-image {
    width: 250px;
    height: 250px;
  }

  /* Members Grid */
  .members-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
  }

  /* Publications */
  .publication-header {
    flex-direction: column;
    gap: var(--space-md);
  }

  .year-badge {
    align-self: flex-start;
  }

  /* News */
  .news-item {
    grid-template-columns: auto 1fr;
    gap: var(--space-md);
  }

  .news-date {
    width: 70px;
    height: 70px;
  }

  /* Footer */
  .footer-content {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
  }
}

/* ============= Mobile & Below (< 768px) ============= */

@media (max-width: 767px) {

  /* Base font size adjustment */
  html {
    font-size: 15px;
  }

  /* Typography */
  h1 {
    font-size: var(--font-size-2xl);
  }

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

  h3 {
    font-size: var(--font-size-lg);
  }

  .hero h1 {
    font-size: var(--font-size-3xl);
  }

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

  .hero-description {
    font-size: var(--font-size-base);
  }

  /* Spacing */
  :root {
    --section-padding-vertical: 2.5rem;
    --section-padding-horizontal: 1rem;
  }

  .section-title {
    margin-bottom: var(--space-xl);
  }

  /* Container */
  .container {
    padding: 0 var(--space-md);
  }

  /* Header & Navigation */
  .header .container {
    padding-top: var(--space-xs);
    padding-bottom: var(--space-xs);
  }

  .logo {
    height: 75px;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 70%;
    max-width: 300px;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--space-3xl) var(--space-lg);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: var(--z-index-modal);
    align-items: flex-start;
    gap: var(--space-md);
  }

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

  .nav-menu a {
    width: 100%;
    padding: var(--space-md);
    font-size: var(--font-size-lg);
    border-bottom: 1px solid var(--color-border-gray);
  }

  .nav-menu a.active::after {
    left: var(--space-md);
    right: auto;
    width: 30%;
  }

  .menu-toggle {
    display: flex;
    flex-direction: column;
    position: relative;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
  }

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

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
  }

  /* Hero Section */
  .hero {
    min-height: 75vh;
    padding: 100px 20px 60px;
  }

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

  .hero-cta .btn {
    width: 100%;
    max-width: 280px;
  }

  /* Research Leader */
  .leader-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }

  .leader-image {
    width: 200px;
    height: 200px;
  }

  .leader-info h2 {
    font-size: var(--font-size-2xl);
  }

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

  .leader-credentials {
    font-size: var(--font-size-base);
  }

  .interests-tags {
    justify-content: center;
  }

  .leader-links {
    justify-content: center;
  }

  .leader-bio {
    text-align: left;
  }

  /* PI Section */
  .pi-section {
    margin-bottom: var(--space-2xl);
  }

  .pi-section .member-card {
    flex-direction: column;
  }

  .pi-section .member-image {
    width: 100%;
    height: 280px;
  }

  /* Members Grid */
  .members-grid {
    gap: var(--space-lg);
  }

  .members-grid .member-card {
    width: 100%;
  }

  .member-image {
    height: 180px;
  }

  .member-info {
    padding: var(--space-md);
  }

  /* Publications */
  .publications-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .filter-container {
    width: 100%;
  }

  .year-filter {
    width: 100%;
  }

  .publications-list {
    gap: var(--space-lg);
  }

  .publication-item {
    padding: var(--space-lg);
  }

  .publication-header {
    flex-direction: row;
    gap: var(--space-md);
  }

  .year-badge {
    width: 50px;
    height: 50px;
    font-size: var(--font-size-base);
  }

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

  .publication-links {
    flex-direction: column;
  }

  .publication-links .btn-link {
    width: 100%;
    text-align: center;
  }

  /* News Section */
  .news-grid {
    gap: var(--space-lg);
  }

  .news-item {
    grid-template-columns: auto 1fr;
    gap: var(--space-md);
    padding: var(--space-md);
  }

  .news-date {
    width: 60px;
    height: 60px;
  }

  .news-day {
    font-size: var(--font-size-xl);
  }

  .news-month {
    font-size: var(--font-size-xs);
  }

  .news-content h3 {
    font-size: var(--font-size-lg);
  }

  /* Alumni Section */
  .alumni-year-heading {
    font-size: var(--font-size-xl);
  }

  .alumni-item {
    padding: var(--space-md);
  }

  .alumni-name {
    font-size: var(--font-size-base);
  }

  .alumni-details,
  .alumni-current {
    font-size: var(--font-size-sm);
  }

  /* Footer */
  .footer {
    padding: var(--space-2xl) 0 var(--space-lg);
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

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

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

  .footer-links {
    text-align: center;
  }

  /* Buttons */
  .btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-base);
  }

  .social-link {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
  }
}

/* ============= Small Mobile (< 480px) ============= */

@media (max-width: 479px) {

  /* Even smaller adjustments */
  html {
    font-size: 14px;
  }

  .hero h1 {
    font-size: var(--font-size-2xl);
  }

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

  .logo {
    height: 65px;
  }

  .leader-image {
    width: 180px;
    height: 180px;
  }

  .member-image {
    height: 250px;
  }

  .news-item {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .news-date {
    margin: 0 auto;
  }

  .year-badge {
    width: 45px;
    height: 45px;
    font-size: var(--font-size-sm);
  }
}

/* ============= Large Desktop (> 1440px) ============= */

@media (min-width: 1440px) {

  .container {
    max-width: 1400px;
  }

  .hero h1 {
    font-size: 5rem;
  }

  .hero-subtitle {
    font-size: 2.5rem;
  }

  .members-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }
}

/* ============= Print Styles ============= */

@media print {

  .header,
  .menu-toggle,
  .hero-cta,
  .footer-social,
  .btn,
  .filter-container {
    display: none;
  }

  body {
    font-size: 12pt;
    color: black;
    background: white;
  }

  section {
    page-break-inside: avoid;
  }

  a {
    text-decoration: underline;
    color: black;
  }

  .publication-item,
  .news-item,
  .alumni-item {
    box-shadow: none;
    border: 1px solid #ccc;
    margin-bottom: 1em;
  }
}

/* ============= 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;
  }
}

/* ============= High Contrast Mode ============= */

@media (prefers-contrast: high) {

  :root {
    --color-primary: #0066CC;
    --color-navy: #000066;
  }

  .btn,
  .member-card,
  .publication-item,
  .news-item {
    border: 2px solid currentColor;
  }
}