/* ========================================
   QueStudy - Responsive Breakpoints
   ======================================== */

/* ========================================
   1280px and below
   ======================================== */
@media (max-width: 1280px) {
  .qs-container {
    padding: 0 32px;
  }

  .qs-dashboard-quick-actions {
    grid-template-columns: repeat(2, 1fr);
  }

  .qs-hero-title {
    font-size: 3rem;
  }
}

/* ========================================
   1024px and below
   ======================================== */
@media (max-width: 1024px) {
  /* Layouts */
  .qs-content-layout {
    flex-direction: column;
  }

  .qs-content-layout .qs-content-sidebar {
    width: 100%;
  }

  .qs-sidebar {
    width: 100%;
  }

  /* Grids (inline grid-template-columns on templates must not win on mobile) */
  .qs-grid-4 {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .qs-grid-3 {
    grid-template-columns: repeat(2, 1fr) !important;
  }

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

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

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

  /* Hero */
  .qs-hero-content {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }

  .qs-hero-text {
    max-width: 700px;
    margin: 0 auto;
  }

  .qs-hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .qs-hero-actions {
    justify-content: center;
  }

  .qs-hero-stats {
    justify-content: center;
  }

  .qs-hero-visual {
    max-width: 400px;
  }

  /* Footer */
  .qs-footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  /* Dashboard */
  .qs-dashboard-grid {
    grid-template-columns: 1fr;
  }

  .qs-dashboard-search input {
    min-width: 200px;
  }

  /* Cards */
  .qs-card {
    padding: 20px;
  }
}

/* ========================================
   768px and below
   ======================================== */
@media (max-width: 768px) {
  /* Typography */
  .qs-hero-title {
    font-size: 2rem;
    letter-spacing: -0.01em;
  }

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

  .qs-section-title {
    font-size: 1.75rem;
  }

  .qs-single-title {
    font-size: 1.75rem;
  }

  .qs-page-title {
    font-size: 1.75rem !important;
  }

  .qs-archive-title {
    font-size: 1.5rem;
  }

  .qs-cta-card h2 {
    font-size: 1.75rem;
  }

  /* Hero */
  .qs-hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

  .qs-hero-stats {
    flex-direction: column;
    gap: 24px;
    align-items: center;
  }

  .qs-stat-item {
    text-align: center;
  }

  .qs-hero-visual {
    display: none;
  }

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

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

  /* Grids (inline grid-template-columns on templates must not win on mobile) */
  .qs-grid-2,
  .qs-grid-3,
  .qs-grid-4 {
    grid-template-columns: 1fr !important;
  }

  /* Legal pages (Terms of Service): stack TOC above content on mobile */
  .qs-legal-layout {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
  }

  .qs-dashboard-stats {
    grid-template-columns: 1fr;
  }

  .qs-dashboard-quick-actions {
    grid-template-columns: repeat(2, 1fr);
  }

  .qs-404-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .qs-post-grid {
    grid-template-columns: 1fr;
  }

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

  /* Header */
  .qs-header {
    height: 64px;
  }

  .qs-header-right .qs-btn {
    display: none;
  }

  .qs-nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--qs-bg-white);
    z-index: 999;
    padding: 24px;
    overflow-y: auto;
  }

  .qs-nav.open {
    display: block;
  }

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

  .qs-nav a {
    font-size: 1rem;
    padding: 12px 16px;
  }

  .qs-nav .sub-menu {
    position: static;
    box-shadow: none;
    padding-left: 16px;
    background: var(--qs-bg);
    margin-top: 4px;
    border-radius: var(--qs-radius);
  }

  .qs-mobile-toggle {
    display: flex;
  }

  /* Footer */
  .qs-footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .qs-footer-bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  .qs-footer-links {
    width: 100%;
    max-width: 320px;
    gap: 8px;
  }

  .qs-footer-links a {
    flex: 1 1 100%;
    padding: 10px 18px;
  }

  .qs-footer-main {
    padding: 40px 0 24px;
  }

  /* Section */
  .qs-section {
    padding: 48px 0;
  }

  .qs-section-header {
    margin-bottom: 32px;
  }

  .qs-section-badge {
    font-size: 0.75rem;
  }

  /* CTA */
  .qs-cta-card {
    padding: 40px 24px;
    border-radius: var(--qs-radius-lg);
  }

  .qs-cta-card p {
    font-size: 1rem;
  }

  /* Cards */
  .qs-card {
    padding: 20px;
    border-radius: var(--qs-radius-md);
  }

  .qs-card-hover:hover {
    transform: translateY(-2px);
  }

  /* Post */
  .qs-post-card-body {
    padding: 16px;
  }

  .qs-post-title {
    font-size: 1.125rem;
  }

  /* Single */
  .qs-single-post {
    padding: 24px 16px;
  }

  .qs-single-content {
    font-size: 1rem;
  }

  .qs-single-content h2 {
    font-size: 1.375rem;
  }

  .qs-single-content h3 {
    font-size: 1.125rem;
  }

  .qs-post-nav {
    flex-direction: column;
  }

  /* Page */
  .qs-page {
    padding: 24px 16px;
  }

  .qs-page-content {
    font-size: 1rem;
  }

  /* Pagination */
  .qs-pagination {
    gap: 6px;
  }

  .qs-pagination .page-numbers {
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    font-size: 0.8125rem;
  }

  /* 404 */
  .qs-404-page {
    padding: 60px 16px;
  }

  .qs-404-title {
    font-size: 2rem;
  }

  .qs-404-visual {
    font-size: 4rem;
  }

  .qs-404-actions {
    flex-direction: column;
    align-items: center;
  }

  .qs-404-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Mobile Bottom Nav */
  .qs-mobile-nav {
    display: flex;
  }

  /* Dashboard */
  .qs-dashboard-sidebar {
    transform: translateX(-100%);
  }

  .qs-dashboard-sidebar-open {
    transform: translateX(0);
  }

  .qs-dashboard-main {
    margin-left: 0;
  }

  .qs-dashboard-content {
    padding: 20px 16px;
  }

  .qs-dashboard-header {
    padding: 12px 16px;
  }

  .qs-dashboard-toggle {
    display: block;
  }

  .qs-dashboard-search input {
    min-width: 150px;
  }

  .qs-dashboard-greeting {
    font-size: 1.25rem;
  }

  .qs-dashboard-stat-value {
    font-size: 1.5rem;
  }

  .qs-dashboard-stat-card {
    padding: 20px;
  }

  .qs-dashboard-user-name {
    display: none;
  }

  .qs-dashboard-card-header {
    padding: 16px 20px;
  }

  .qs-dashboard-card-body {
    padding: 20px;
  }

  /* Breadcrumbs */
  .qs-breadcrumbs {
    font-size: 0.75rem;
  }

  /* Container */
  .qs-container,
  .qs-container-narrow {
    padding: 0 16px;
  }

  /* Buttons */
  .qs-btn-xl {
    padding: 14px 28px;
    font-size: 1rem;
  }

  .qs-btn-lg {
    padding: 12px 24px;
  }
}

/* ========================================
   480px and below
   ======================================== */
@media (max-width: 480px) {
  .qs-hero-title {
    font-size: 1.75rem;
  }

  .qs-hero-subtitle {
    font-size: 0.9375rem;
  }

  .qs-hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .qs-hero-actions .qs-btn {
    width: 100%;
    justify-content: center;
  }

  .qs-hero-stats {
    gap: 16px;
  }

  .qs-stat-item .qs-stat-number {
    font-size: 1.5rem;
  }

  .qs-stat-item .qs-stat-label {
    font-size: 0.8125rem;
  }

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

  .qs-section-desc {
    font-size: 0.9375rem;
  }

  .qs-cta-card {
    padding: 32px 20px;
  }

  .qs-cta-card h2 {
    font-size: 1.5rem;
  }

  .qs-cta-card p {
    font-size: 0.9375rem;
  }

  .qs-card {
    padding: 16px;
    border-radius: var(--qs-radius);
  }

  .qs-feature-card {
    padding: 24px;
  }

  .qs-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .qs-stat-large .qs-stat-number {
    font-size: 1.75rem;
  }

  .qs-stat-large .qs-stat-label {
    font-size: 0.8125rem;
  }

  .qs-dashboard-content {
    padding: 16px 12px;
  }

  .qs-dashboard-header {
    padding: 10px 12px;
  }

  .qs-dashboard-search input {
    min-width: 100px;
    padding: 6px 12px 6px 34px;
    font-size: 0.8125rem;
  }

  .qs-dashboard-quick-actions {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .qs-dashboard-quick-action {
    padding: 16px;
  }

  .qs-dashboard-stats {
    gap: 12px;
  }

  .qs-dashboard-stat-card {
    padding: 16px;
  }

  .qs-dashboard-stat-value {
    font-size: 1.25rem;
  }

  .qs-dashboard-stat-icon {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .qs-single-title {
    font-size: 1.5rem;
  }

  .qs-page-title {
    font-size: 1.5rem !important;
  }

  .qs-archive-title {
    font-size: 1.25rem;
  }

  .qs-404-title {
    font-size: 1.75rem;
  }

  .qs-404-desc {
    font-size: 1rem;
  }

  .qs-404-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .qs-404-grid a {
    padding: 10px;
    font-size: 0.8125rem;
  }

  .qs-post-title {
    font-size: 1rem;
  }

  .qs-pagination .page-numbers {
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    font-size: 0.75rem;
  }

  .qs-btn-sm {
    padding: 4px 12px;
    font-size: 0.75rem;
  }

  .qs-btn-md {
    padding: 8px 16px;
    font-size: 0.8125rem;
  }

  .qs-btn-lg {
    padding: 10px 20px;
    font-size: 0.875rem;
  }

  .qs-btn-xl {
    padding: 12px 24px;
    font-size: 0.9375rem;
  }

  .qs-mobile-nav-item {
    font-size: 0.6875rem;
  }

  .qs-widget {
    padding: 20px;
  }

  .qs-section {
    padding: 40px 0;
  }

  .qs-hero {
    padding: 80px 0 48px;
  }

  .qs-footer-main {
    padding: 32px 0 16px;
  }

  .qs-footer-links a {
    padding: 11px 16px;
    font-size: 0.8125rem;
  }

  .qs-search-input {
    padding: 10px 14px;
    font-size: 0.8125rem;
  }

  .qs-breadcrumbs {
    font-size: 0.6875rem;
    gap: 6px;
  }

  .qs-single-content {
    font-size: 0.9375rem;
    line-height: 1.7;
  }

  .qs-single-content h2 {
    font-size: 1.25rem;
  }

  .qs-single-content h3 {
    font-size: 1.0625rem;
  }

  .qs-page-content {
    font-size: 0.9375rem;
  }

  .qs-tags a {
    font-size: 0.75rem;
    padding: 3px 10px;
  }

  .qs-post-nav a {
    padding: 12px 16px;
  }

  .qs-post-nav .nav-title {
    font-size: 0.8125rem;
  }

  .qs-header-inner {
    padding: 0 16px;
  }
}