/* ===========================================
   responsive.css — All media-query overrides,
   ordered from large screens down to small mobile.
   =========================================== */

/* --- Tablet (< 1100px) — scale down photobook --- */
@media (max-width: 1100px) {
  .photobook-page {
    width: 380px;
    height: 590px;
  }

  .photobook-spine {
    height: 590px;
  }

  .page-nav-side {
    font-size: 18px;
    padding: 30px 12px;
  }
}

/* --- Small tablet / landscape mobile (< 900px) --- */
@media (max-width: 900px) {
  .photobook-page {
    width: 320px;
    height: 500px;
  }

  .photobook-spine {
    height: 500px;
  }

  .page-nav-side {
    font-size: 16px;
    padding: 25px 10px;
  }

  .page-nav-side.prev-page {
    left: 10px;
  }

  .page-nav-side.next-page {
    right: 10px;
  }

  .page-counter {
    font-size: 10px;
    padding: 8px 15px;
  }
}

/* --- Mobile portrait (< 768px) --- */
@media (max-width: 768px) {
  .pixel-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .nav-btn {
    font-size: 10px;
    padding: 7px;
  }

  .lang-toggle {
    position: absolute;
    right: 8px;
    top: 8px;
    transform: none;
    font-size: 8px;
    padding: 6px 10px;
  }

  .lang-toggle:hover {
    transform: translate(2px, 2px);
  }

  .lang-toggle:active {
    transform: translate(4px, 4px);
  }

  .pixel-title {
    font-size: 12px;
    margin-bottom: 15px;
  }

  .content-section {
    padding: 20px 15px;
    padding-top: 60px;
  }

  .pixel-box {
    padding: 15px;
    max-width: 90%;
    border: 3px solid #fff;
    box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
  }

  .bio-box {
    margin-top: 20px;
    padding: 12px;
  }

  .pixel-avatar {
    width: 50px;
    height: 50px;
    margin-bottom: 10px;
  }

  .bio-content p {
    font-size: 8px;
    margin-bottom: 10px;
  }

  .bio-text {
    padding: 10px;
    font-size: 7px;
  }

  .stats {
    margin-top: 10px;
    padding-top: 10px;
  }

  .stat-item {
    font-size: 7px;
    margin-bottom: 6px;
  }

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

  .education-grid {
    grid-template-columns: 1fr;
    gap: 7px;
    min-width: 0;
    width: 100%;
    overflow: hidden;
  }

  .edu-msc-container {
    grid-row: auto;
    padding: 12px;
    min-width: 0;
    overflow: hidden;
  }

  .edu-certificate {
    grid-column: span 1;
    min-width: 0;
  }

  .uni-room {
    padding: 12px;
    min-width: 0;
  }

  .uni-room h3 {
    font-size: 10px;
    margin-bottom: 8px;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .msc-title {
    font-size: 9px;
    margin-bottom: 10px;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .msc-modules {
    gap: 6px;
  }

  .edu-msc {
    padding: 6px 10px !important;
  }

  .edu-msc h3 {
    font-size: 8px;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .msc-description {
    display: none;
  }

  .msc-description-mobile {
    display: block;
    margin-bottom: 10px;
    font-size: 6px;
  }

  .room-summary {
    display: block;
    margin-top: 5px;
  }

  .uni-room .room-content {
    display: none;
  }

  .modal-content {
    padding: 20px;
    width: 95%;
    border-width: 4px;
  }

  .close-btn {
    font-size: 18px;
    width: 40px;
    height: 40px;
  }

  #experience-modal .experience-close {
    top: 10px;
    right: 10px;
  }

  .room-detail h2 {
    font-size: 14px;
    margin-bottom: 15px;
  }

  .project-item {
    padding: 10px 12px;
  }

  .project-item h3 {
    font-size: 10px;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .project-item p {
    font-size: 8px;
  }

  .photobook-btn {
    font-size: 20px;
    padding: 25px 50px;
  }

  .experience-btn {
    font-size: 12px;
    padding: 20px 30px;
    margin-top: 150px;
  }

  .experience-title {
    font-size: 16px;
    margin-bottom: 25px;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .experience-content {
    padding: 20px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .photobook-page {
    width: 260px;
    height: 400px;
  }

  .photobook-spine {
    height: 400px;
  }

  .photo-frame {
    padding: 4px 10px;
  }

  .page-nav-side {
    font-size: 14px;
    padding: 20px 8px;
  }

  .page-nav-side.prev-page {
    left: 5px;
  }

  .page-nav-side.next-page {
    right: 5px;
  }
}

/* --- Small mobile (< 600px) --- */
@media (max-width: 600px) {
  .lang-toggle {
    font-size: 7px;
    padding: 5px 8px;
    right: 5px;
    top: 5px;
  }

  .content-section {
    padding: 10px 10px;
    padding-top: 50px;
  }

  .pixel-box {
    padding: 12px;
    max-width: 95%;
    border: 2px solid #fff;
    box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.5);
  }

  .bio-box {
    margin-top: 10px;
    padding: 10px;
  }

  .pixel-title {
    font-size: 10px;
    margin-bottom: 10px;
  }

  .pixel-avatar {
    width: 40px;
    height: 40px;
    margin-bottom: 8px;
  }

  .bio-content p {
    font-size: 7px;
    margin-bottom: 8px;
  }

  .bio-text {
    padding: 8px;
    font-size: 6px;
    line-height: 1.6;
  }

  .stats {
    margin-top: 8px;
    padding-top: 8px;
  }

  .stat-item {
    font-size: 7px;
    margin-bottom: 5px;
  }

  .photobook-page {
    width: 260px;
    height: 400px;
  }

  .photobook-spine {
    height: 310px;
  }

  .photo-frame {
    padding: 3px 8px;
  }

  .page-nav-side {
    font-size: 12px;
    padding: 15px 6px;
  }

  .page-counter {
    font-size: 8px;
    padding: 6px 12px;
    bottom: 15px;
  }

  .photobook-close {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  .education-grid {
    gap: 5px;
    min-width: 0;
    width: 100%;
    overflow: hidden;
  }

  .edu-msc-container {
    padding: 10px;
    min-width: 0;
    overflow: hidden;
  }

  .uni-room {
    padding: 10px;
    min-width: 0;
  }

  .uni-room h3 {
    font-size: 9px;
    margin-bottom: 5px;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .msc-title {
    font-size: 8px;
    margin-bottom: 8px;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .msc-modules {
    gap: 5px;
  }

  .edu-msc {
    padding: 5px 8px !important;
  }

  .edu-msc h3 {
    font-size: 7px;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .room-summary {
    font-size: 6px;
  }

  .msc-description-mobile {
    font-size: 5px;
    margin-bottom: 8px;
  }

  .modal-content {
    padding: 15px;
    width: 95%;
    border-width: 3px;
  }

  .close-btn {
    font-size: 14px;
    width: 32px;
    height: 32px;
    border-width: 2px;
  }

  #experience-modal .experience-close {
    top: 8px;
    right: 8px;
  }

  .room-detail h2 {
    font-size: 12px;
    margin-bottom: 10px;
  }

  .project-item {
    padding: 8px 10px;
    border-width: 2px;
  }

  .project-item h3 {
    font-size: 9px;
    overflow-wrap: break-word;
    word-break: break-word;
  }

  .project-item p {
    font-size: 7px;
  }
}

/* --- Large / 4K displays (> 2000px) --- */
@media (min-width: 2000px) {
  .lang-toggle {
    font-size: 14px;
    padding: 16px 22px;
    border-width: 4px;
    right: 25px;
  }

  .pixel-box {
    max-width: 900px;
    padding: 45px;
    border-width: 6px;
  }

  .pixel-title {
    font-size: 26px;
    margin-bottom: 30px;
  }

  .bio-content p {
    font-size: 14px;
    margin-bottom: 20px;
  }

  .bio-text {
    padding: 22px;
  }

  .stat-item {
    font-size: 12px;
    margin-bottom: 14px;
  }

  .pixel-avatar {
    width: 110px;
    height: 110px;
  }

  .modal-content {
    max-width: 1100px;
    padding: 60px;
    border-width: 8px;
  }

  .close-btn {
    font-size: 30px;
    width: 65px;
    height: 65px;
    top: 15px;
    right: 15px;
  }

  .room-detail h2 {
    font-size: 26px;
    margin-bottom: 40px;
  }

  .room-projects {
    gap: 28px;
  }

  .project-item {
    padding: 22px 28px;
    border-width: 4px;
  }

  .project-item h3 {
    font-size: 16px;
  }

  .project-item p {
    font-size: 12px;
  }

  .education-grid {
    max-width: 1400px;
    gap: 40px;
  }

  .experience-title {
    font-size: 32px;
    margin-bottom: 50px;
  }

  .edu-msc-container {
    padding: 30px;
    border-width: 6px;
  }

  .msc-title {
    font-size: 16px;
  }

  .msc-description {
    font-size: 11px;
  }

  .edu-msc h3 {
    font-size: 14px;
  }

  .university-grid {
    max-width: 1200px;
    gap: 40px;
  }

  .uni-room {
    padding: 28px;
    border-width: 6px;
  }

  .room-title {
    font-size: 14px;
  }

  .room-summary {
    font-size: 10px;
  }

  .contact-box {
    max-width: 850px;
    padding: 55px 70px;
  }

  .contact-content p {
    font-size: 18px;
  }

  .contact-link {
    font-size: 16px;
    padding: 28px 50px;
    border-width: 4px;
  }

  .photobook-btn {
    font-size: 24px;
    padding: 40px 80px;
    border-width: 6px;
  }

  .experience-btn {
    font-size: 18px;
    padding: 40px 55px;
    border-width: 6px;
  }

  .photobook-page {
    width: 600px;
    height: 900px;
  }

  .speech-bubble {
    font-size: 12px;
    padding: 16px 24px;
    border-width: 5px;
  }
}

/* --- Ultra-wide 4K+ (> 3000px) --- */
@media (min-width: 3000px) {
  .pixel-box {
    max-width: 1200px;
    padding: 60px;
  }

  .pixel-title {
    font-size: 34px;
  }

  .bio-content p {
    font-size: 18px;
  }

  .stat-item {
    font-size: 15px;
  }

  .modal-content {
    max-width: 1500px;
    padding: 80px;
  }

  .close-btn {
    font-size: 36px;
    width: 80px;
    height: 80px;
  }

  .room-detail h2 {
    font-size: 34px;
  }

  .project-item h3 {
    font-size: 20px;
  }

  .project-item p {
    font-size: 15px;
  }

  .education-grid {
    max-width: 1800px;
  }

  .university-grid {
    max-width: 1600px;
  }

  .contact-box {
    max-width: 1100px;
  }

  .contact-content p {
    font-size: 22px;
  }

  .contact-link {
    font-size: 20px;
    padding: 35px 60px;
  }

  .photobook-page {
    width: 750px;
    height: 1100px;
  }
}