/* =============================================
   SUBMARINE THEME - responsive.css
   Responsive breakpoints for all screen sizes
   ============================================= */

/* === Tablet Landscape (max-width: 1200px) === */
@media (max-width: 1200px) {
  :root {
    --container-width: 960px;
  }

  .container {
    max-width: 960px;
    padding: 0 20px;
  }

  .hero-brand {
    font-size: 40px;
  }

  .hero-tagline {
    font-size: 16px;
  }

  .sonar-games-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .instrument-features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .depth-stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .footer-columns-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
  }

  .depth-grid-row {
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
  }

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

  .floating-sidebar {
    right: 10px;
  }

  .sidebar-btn {
    width: 40px;
    height: 40px;
    font-size: 14px;
  }
}

/* === Tablet Portrait (max-width: 992px) === */
@media (max-width: 992px) {
  :root {
    --container-width: 720px;
  }

  .container {
    max-width: 720px;
  }

  .header-top {
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
  }

  .header-time {
    order: 3;
    width: 100%;
    text-align: center;
    font-size: 12px;
  }

  .header-btn-group {
    gap: 8px;
  }

  .btn-login,
  .btn-register,
  .btn-demo {
    padding: 7px 14px;
    font-size: 11px;
  }

  .mobile-menu-toggle {
    display: block;
    margin: 10px 0;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 10px 0;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-link {
    padding: 10px 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
  }

  .nav-link:hover,
  .nav-item.current-menu-item .nav-link {
    border-bottom-color: var(--border-color);
    border-left: 3px solid var(--sub-green);
  }

  .has-dropdown .sub-menu {
    position: static;
    border: none;
    border-radius: 0;
    box-shadow: none;
    background: rgba(0,0,0,0.2);
  }

  .sub-menu .nav-link {
    padding-left: 30px;
  }

  .submarine-hero {
    padding: 50px 20px;
  }

  .hero-brand {
    font-size: 34px;
    letter-spacing: 3px;
  }

  .hero-tagline {
    font-size: 14px;
    letter-spacing: 2px;
  }

  .hero-stats-row {
    gap: 25px;
  }

  .hero-stat-number {
    font-size: 24px;
  }

  .depth-gauge-widget {
    width: 60px;
    height: 60px;
    top: 15px;
    right: 15px;
  }

  .gauge-needle {
    height: 22px;
  }

  .radar-sweep-effect {
    width: 45px;
    height: 45px;
    top: 15px;
    left: 15px;
  }

  .sonar-games-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .depth-grid-row {
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
  }

  .depth-grid-node {
    padding: 15px 8px;
  }

  .depth-node-icon {
    font-size: 20px;
  }

  .depth-node-label {
    font-size: 11px;
  }

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

  .depth-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .stat-number {
    font-size: 28px;
  }

  .sonar-promos-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .home-news-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .content-area {
    flex-direction: column;
  }

  .article-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

  .single-article {
    padding: 20px;
  }

  .article-title {
    font-size: 22px;
  }

  .footer-columns-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .footer-license-bar {
    padding: 20px 0;
  }

  .floating-sidebar {
    right: 8px;
    gap: 6px;
  }

  .sidebar-btn {
    width: 38px;
    height: 38px;
    font-size: 13px;
  }
}

/* === Mobile Landscape (max-width: 768px) === */
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .container {
    padding: 0 15px;
  }

  .site-header {
    position: relative;
  }

  .header-top {
    padding: 10px 0;
  }

  .logo img {
    height: 40px;
  }

  .header-btn-group {
    gap: 6px;
  }

  .btn-login,
  .btn-register,
  .btn-demo {
    padding: 6px 10px;
    font-size: 10px;
    letter-spacing: 0;
  }

  .notification-content {
    font-size: 11px;
    gap: 30px;
  }

  .submarine-hero {
    padding: 40px 15px;
    margin: 20px 0;
    border-radius: 10px;
  }

  .sonar-ring.ring-1 { width: 60px; height: 60px; }
  .sonar-ring.ring-2 { width: 120px; height: 120px; }
  .sonar-ring.ring-3 { width: 180px; height: 180px; }
  .sonar-ring.ring-4 { width: 240px; height: 240px; }
  .sonar-ring.ring-5 { width: 300px; height: 300px; }

  .hero-brand {
    font-size: 28px;
    letter-spacing: 2px;
  }

  .hero-tagline {
    font-size: 13px;
    letter-spacing: 1px;
  }

  .hero-divider-line {
    width: 60px;
    margin: 10px auto;
  }

  .hero-description {
    font-size: 14px;
    margin-bottom: 20px;
  }

  .hero-stats-row {
    gap: 15px;
  }

  .hero-stat-number {
    font-size: 20px;
  }

  .hero-stat-label {
    font-size: 10px;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .btn-sub-primary,
  .btn-outline-sub {
    padding: 12px 30px;
    font-size: 13px;
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .depth-gauge-widget {
    display: none;
  }

  .radar-sweep-effect {
    display: none;
  }

  .section-title {
    font-size: 20px;
    letter-spacing: 1px;
  }

  .section-subtitle {
    font-size: 13px;
    margin-bottom: 25px;
  }

  .sonar-games {
    padding: 30px 0;
  }

  .sonar-games-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .sonar-game-card {
    padding: 20px 15px;
  }

  .sonar-game-icon {
    font-size: 30px;
    margin-bottom: 10px;
  }

  .sonar-game-card h3 {
    font-size: 14px;
  }

  .sonar-game-card p {
    font-size: 12px;
    margin-bottom: 8px;
  }

  .depth-grid-section {
    padding: 30px 0;
    margin: 20px 0;
    border-radius: 10px;
  }

  .depth-grid-map {
    padding: 0 15px;
  }

  .depth-grid-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 10px;
  }

  .depth-grid-node {
    padding: 15px 10px;
    border-radius: 8px;
  }

  .instrument-features {
    padding: 30px 0;
  }

  .instrument-features-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .instrument-feature-card {
    padding: 25px 20px;
  }

  .depth-stats {
    padding: 40px 20px;
    margin: 30px 0;
  }

  .depth-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .depth-stat-card {
    padding: 20px 10px;
  }

  .stat-number {
    font-size: 24px;
  }

  .stat-label {
    font-size: 10px;
  }

  .sonar-promos {
    padding: 30px 0;
  }

  .sonar-promos-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .sonar-promo-inner {
    padding: 25px 15px;
  }

  .footer-cta-section {
    padding: 40px 20px;
    margin: 30px 0;
    border-radius: 10px;
  }

  .footer-cta-inner h2 {
    font-size: 22px;
  }

  .footer-cta-inner > p {
    font-size: 14px;
  }

  .cta-features {
    flex-direction: column;
    gap: 10px;
    align-items: center;
  }

  .cta-feature {
    font-size: 12px;
  }

  .cta-main-btn {
    font-size: 14px;
    padding: 14px 35px;
  }

  .home-news-section {
    padding: 30px 0;
  }

  .home-news-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .article-card-thumb {
    height: 160px;
  }

  .article-card-title {
    font-size: 13px;
    padding: 12px 12px 5px;
    min-height: 40px;
  }

  .article-card-meta {
    padding: 0 12px;
    font-size: 11px;
  }

  .article-card-excerpt {
    padding: 8px 12px 12px;
    font-size: 12px;
  }

  .article-card-more {
    padding: 10px 12px;
    font-size: 11px;
  }

  .view-more-btn {
    padding: 10px 25px;
    font-size: 12px;
  }

  .breadcrumb {
    font-size: 11px;
    padding: 10px 0;
    gap: 6px;
  }

  .category-header {
    padding: 15px 0;
  }

  .category-title {
    font-size: 18px;
  }

  .provider-tabs {
    gap: 6px;
    padding: 10px 0;
  }

  .provider-tab {
    padding: 6px 12px;
    font-size: 11px;
  }

  .article-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .article-meta {
    gap: 10px;
    font-size: 12px;
  }

  .article-content {
    font-size: 14px;
  }

  .article-nav {
    flex-direction: column;
    gap: 10px;
  }

  .article-nav-next {
    text-align: left;
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .related-item-thumb {
    height: 80px;
  }

  .related-item-title {
    font-size: 11px;
    padding: 8px;
  }

  .page-article {
    padding: 20px;
  }

  .page-title {
    font-size: 22px;
  }

  .page-content {
    font-size: 14px;
  }

  .error-page {
    padding: 50px 15px;
  }

  .error-sub-icon {
    font-size: 40px;
  }

  .error-code {
    font-size: 60px;
  }

  .error-title {
    font-size: 18px;
  }

  .error-desc {
    font-size: 14px;
  }

  .site-footer {
    padding: 30px 0 20px;
    margin-top: 30px;
  }

  .footer-columns-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .footer-col h4 {
    font-size: 13px;
    margin-bottom: 10px;
  }

  .footer-col ul li {
    margin-bottom: 6px;
  }

  .footer-col ul li a {
    font-size: 12px;
  }

  .license-icons {
    gap: 15px;
  }

  .license-item i {
    font-size: 20px;
  }

  .license-item span {
    font-size: 10px;
  }

  .footer-copyright {
    font-size: 11px;
  }

  .floating-sidebar {
    right: 5px;
    gap: 5px;
  }

  .sidebar-btn {
    width: 35px;
    height: 35px;
    font-size: 12px;
  }

  .announcement-content {
    padding: 20px;
    max-width: 95%;
  }

  .announcement-title {
    font-size: 15px;
  }

  .announcement-item {
    padding: 8px 10px;
    font-size: 12px;
  }

  .announcement-text {
    font-size: 11px;
  }

  .announcement-cta {
    padding: 10px 30px;
    font-size: 12px;
  }
}

/* === Mobile Portrait (max-width: 480px) === */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 12px;
  }

  .logo img {
    height: 35px;
  }

  .header-btn-group {
    gap: 4px;
  }

  .btn-login,
  .btn-register,
  .btn-demo {
    padding: 5px 8px;
    font-size: 9px;
  }

  .submarine-hero {
    padding: 30px 12px;
  }

  .hero-brand {
    font-size: 22px;
    letter-spacing: 1px;
  }

  .hero-tagline {
    font-size: 11px;
  }

  .hero-divider-line {
    width: 40px;
    margin: 8px auto;
  }

  .hero-description {
    font-size: 13px;
  }

  .hero-stats-row {
    gap: 10px;
  }

  .hero-stat-number {
    font-size: 18px;
  }

  .hero-stat-label {
    font-size: 9px;
  }

  .btn-sub-primary,
  .btn-outline-sub {
    padding: 10px 20px;
    font-size: 12px;
  }

  .section-title {
    font-size: 17px;
  }

  .sonar-games-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .sonar-game-card {
    padding: 20px;
    text-align: center;
  }

  .depth-grid-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .depth-grid-node {
    padding: 12px 8px;
  }

  .depth-node-icon {
    font-size: 18px;
  }

  .depth-node-label {
    font-size: 10px;
  }

  .instrument-feature-card {
    padding: 20px 15px;
  }

  .instrument-feature-icon {
    width: 50px;
    height: 50px;
    font-size: 20px;
  }

  .depth-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .depth-stat-card {
    padding: 15px 8px;
  }

  .stat-number {
    font-size: 20px;
  }

  .stat-label {
    font-size: 9px;
  }

  .sonar-promo-inner {
    padding: 20px 12px;
  }

  .sonar-promo-inner h3 {
    font-size: 14px;
  }

  .footer-cta-inner h2 {
    font-size: 18px;
  }

  .home-news-grid {
    gap: 12px;
  }

  .article-card-thumb {
    height: 140px;
  }

  .article-grid {
    gap: 12px;
  }

  .single-article {
    padding: 15px;
    border-radius: 8px;
  }

  .article-title {
    font-size: 18px;
  }

  .article-meta {
    gap: 8px;
    font-size: 11px;
  }

  .related-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .related-item-thumb {
    height: 70px;
  }

  .page-article {
    padding: 15px;
  }

  .page-title {
    font-size: 18px;
  }

  .error-code {
    font-size: 50px;
  }

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

  .footer-columns-grid {
    gap: 20px;
  }

  .floating-sidebar {
    bottom: 10px;
    top: auto;
    right: 10px;
    transform: none;
    flex-direction: row;
    gap: 6px;
  }

  .sidebar-btn {
    width: 32px;
    height: 32px;
    font-size: 11px;
  }

  .announcement-content {
    padding: 15px;
    width: 95%;
    border-radius: 10px;
  }

  .announcement-header-icon {
    font-size: 30px;
  }

  .announcement-title {
    font-size: 13px;
    margin-bottom: 12px;
  }

  .announcement-list {
    gap: 6px;
  }

  .announcement-item {
    padding: 6px 8px;
    gap: 6px;
  }

  .announcement-badge {
    font-size: 8px;
    padding: 1px 5px;
  }

  .announcement-text {
    font-size: 10px;
  }
}

/* === Small Mobile (max-width: 360px) === */
@media (max-width: 360px) {
  html {
    font-size: 13px;
  }

  .container {
    padding: 0 10px;
  }

  .hero-brand {
    font-size: 20px;
  }

  .hero-tagline {
    font-size: 10px;
  }

  .hero-stats-row {
    flex-wrap: wrap;
    gap: 8px;
  }

  .hero-stat {
    flex: 0 0 45%;
  }

  .btn-sub-primary,
  .btn-outline-sub {
    padding: 10px 15px;
    font-size: 11px;
    letter-spacing: 1px;
  }

  .section-title {
    font-size: 15px;
  }

  .depth-grid-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .depth-stats-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .floating-sidebar {
    right: 5px;
    bottom: 5px;
  }

  .sidebar-btn {
    width: 30px;
    height: 30px;
    font-size: 10px;
  }
}

/* === Print Styles === */
@media print {
  .site-header,
  .site-footer,
  .floating-sidebar,
  .announcement-modal,
  .notification-bar {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .main-content,
  .single-article,
  .page-article {
    background: #fff;
    border: none;
    padding: 0;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}

/* === Landscape Orientation === */
@media (max-height: 500px) and (orientation: landscape) {
  .submarine-hero {
    padding: 30px 20px;
  }

  .hero-brand {
    font-size: 24px;
  }

  .hero-stats-row {
    flex-wrap: wrap;
    gap: 10px;
  }

  .announcement-content {
    max-height: 90vh;
    overflow-y: auto;
  }

  .floating-sidebar {
    flex-direction: row;
    top: auto;
    bottom: 10px;
    right: 50%;
    transform: translateX(50%);
  }
}

/* === High DPI / Retina === */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .logo img,
  .footer-brand-logo img {
    image-rendering: -webkit-optimize-contrast;
  }
}

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

  .notification-content {
    animation: none;
  }

  .sonar-ring,
  .gauge-needle,
  .radar-sweep-effect::after {
    animation: none;
  }
}

/* === Dark Mode Support (already dark by default) === */
@media (prefers-color-scheme: light) {
  /* Keep dark theme as default - submarine theme is inherently dark */
}