/* Mobile-First Optimizations for Tozan Theme */

/* Mobile Performance Optimizations */
* {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

/* ============================================
   Mobile-First Base Styles
   ============================================ */

/* Viewport and Safe Areas */
@supports (padding: max(0px)) {
  :root {
    --safe-area-inset-top: env(safe-area-inset-top, 0px);
    --safe-area-inset-right: env(safe-area-inset-right, 0px);
    --safe-area-inset-bottom: env(safe-area-inset-bottom, 0px);
    --safe-area-inset-left: env(safe-area-inset-left, 0px);
  }
}

/* Mobile Typography Optimization */
@media (max-width: 768px) {
  :root {
    --font-size-min-hero: 2rem;
    --font-size-min-xxxl: 1.75rem;
    --font-size-min-xxl: 1.5rem;
    --font-size-min-xl: 1.25rem;
    --font-size-min-l: 1.125rem;
    --font-size-min-m: 1rem;
    --font-size-min-r: 0.9375rem;
    --font-size-min-s: 0.875rem;
    --font-size-min-xs: 0.8125rem;
    --font-size-min-xxs: 0.75rem;
    
    /* Mobile spacing */
    --grid-gap: max(20px, 4vw);
    --site-gap: max(16px, 4vw);
    --row-gap: max(32px, 5vw);
    --mini-gap: max(12px, 2vw);
  }
  
  /* Better line height for mobile readability */
  body {
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  
  /* Optimize headings for mobile */
  h1, h2, h3 {
    line-height: 1.2;
    word-wrap: break-word;
    hyphens: auto;
  }
}

/* ============================================
   Touch Targets & Interactions
   ============================================ */

/* Minimum touch target size (44x44px recommended by Apple/Google) */
@media (max-width: 768px) {
  button,
  a,
  [role="button"],
  input[type="button"],
  input[type="submit"] {
    min-height: 44px;
    min-width: 44px;
    padding: 12px 20px;
  }
  
  /* Navigation links */
  nav a,
  nav button {
    min-height: 48px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
  }
  
  /* Post item links */
  .item-title a {
    min-height: 44px;
    padding: 8px 0;
    display: block;
  }
  
  /* Share buttons */
  .share-item {
    min-width: 48px;
    min-height: 48px;
    padding: 12px;
  }
  
  /* Widget items */
  .widget-item {
    min-height: 44px;
    padding: 12px 16px;
  }
}

/* Touch feedback */
@media (hover: none) and (pointer: coarse) {
  button:active,
  a:active,
  [role="button"]:active {
    opacity: 0.7;
    transform: scale(0.98);
    transition: opacity 0.1s, transform 0.1s;
  }
}

/* ============================================
   Mobile Navigation
   ============================================ */

@media (max-width: 1024px) {
  /* Mobile menu overlay */
  [data-toggle][aria-expanded="true"] ~ nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: var(--color-body);
    z-index: 9999;
    padding: calc(env(safe-area-inset-top, 0px) + 80px) var(--site-gap) var(--site-gap);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  /* Mobile menu backdrop */
  [data-toggle][aria-expanded="true"] ~ nav::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: calc(env(safe-area-inset-top, 0px) + 60px);
    background: var(--color-body);
    z-index: -1;
  }
  
  /* Mobile menu list */
  [data-toggle][aria-expanded="true"] ~ nav > ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  
  /* Mobile menu items */
  [data-toggle][aria-expanded="true"] ~ nav li {
    font-size: var(--font-size-l);
    border-bottom: 1px solid var(--color-three);
    padding: 12px 0;
  }
  
  [data-toggle][aria-expanded="true"] ~ nav li:last-child {
    border-bottom: none;
  }
  
  /* Hamburger button positioning */
  [data-toggle] {
    position: relative;
    z-index: 10000;
    width: 44px;
    height: 44px;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
  }
  
  [data-toggle] span {
    width: 24px;
    height: 2px;
    background: var(--color-font-one);
    transition: all 0.3s ease;
    display: block;
  }
  
  [data-toggle][aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
  }
  
  [data-toggle][aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  
  [data-toggle][aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }
}

/* ============================================
   Mobile Layout Optimizations
   ============================================ */

@media (max-width: 480px) {
  /* Single column layout for mobile */
  .g-loop[data-loop="balance"],
  .g-loop[data-loop="grid"],
  .g-loop[data-loop="showcase"],
  .g-loop[data-loop="related"],
  .g-loop[data-loop="featured"] {
    grid-template-columns: 1fr !important;
    gap: var(--mini-gap);
  }
  
  /* Mobile post items */
  .item {
    gap: var(--mini-gap);
    padding: 0;
  }
  
  .item-content {
    padding: var(--mini-gap) 0 0;
  }
  
  .item-title {
    font-size: var(--font-size-l);
    line-height: 1.3;
    margin-bottom: 8px;
    word-break: break-word;
  }
  
  .item-title a {
    display: block;
    padding: 4px 0;
  }
  
  /* Mobile hero section */
  .headline-hero {
    font-size: clamp(1.75rem, 7vw, 2.5rem);
    line-height: 1.1;
    margin-bottom: var(--mini-gap);
    word-break: break-word;
  }
  
  /* Mobile widgets */
  .widget-wrap {
    gap: 8px;
    padding: var(--mini-gap) 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  
  .widget-wrap::-webkit-scrollbar {
    display: none;
  }
  
  .widget-item {
    font-size: var(--font-size-xs);
    padding: 10px 14px;
    flex-shrink: 0;
    min-width: fit-content;
  }
  
  /* Mobile spacing */
  .g-section {
    padding: var(--row-gap) var(--site-gap);
  }
  
  .loop-section {
    margin-bottom: var(--row-gap);
  }
  
  /* Mobile headline section */
  .headline-section {
    padding: var(--mini-gap) var(--site-gap);
  }
}

/* ============================================
   Mobile Header & Footer
   ============================================ */

@media (max-width: 768px) {
  /* Mobile header */
  .header-section {
    padding-top: max(12px, env(safe-area-inset-top, 12px));
    padding-bottom: 12px;
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-body);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  }

  .header-wrap {
    padding: 0 var(--site-gap);
    display: flex !important;
    justify-content: space-between;
    align-items: center !important;
    flex-direction: row !important;
    margin-top: 0 !important;
    min-height: 44px;
  }

  .header-logo {
    flex-shrink: 0;
  }

  .header-logo a {
    font-size: clamp(1rem, 4vw, 1.25rem);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
  }

  .header-content {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .header-nav {
    margin-left: 0;
  }
  
  /* Mobile footer */
  .footer-section {
    padding: var(--row-gap) var(--site-gap);
    padding-bottom: max(var(--row-gap), env(safe-area-inset-bottom, var(--row-gap)));
    margin-top: var(--row-gap);
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--mini-gap);
    align-items: center;
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
  }
  
  .footer-social li {
    min-width: 44px;
    min-height: 44px;
  }
  
  .footer-copyright {
    text-align: center;
    font-size: var(--font-size-xxxs);
    margin-top: var(--mini-gap);
    line-height: 1.5;
  }
  
  .footer-columns {
    display: none; /* Hide footer columns on mobile */
  }
}

/* ============================================
   Mobile Post Pages
   ============================================ */

@media (max-width: 768px) {
  /* Mobile post content */
  /* Mobile post content */
  .post-content {
    padding: var(--site-gap);
    font-size: var(--font-size-r);
    line-height: 1.75;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }
  
  .post-content p {
    margin-bottom: 1.3em;
    text-align: justify;
    text-justify: inter-word;
  }
  
  .post-content h2 {
    font-size: var(--font-size-xl);
    margin-top: 1.8em;
    margin-bottom: 0.8em;
    line-height: 1.25;
    font-weight: 600;
  }
  
  .post-content h2:first-child {
    margin-top: 0;
  }
  
  .post-content h3 {
    font-size: var(--font-size-l);
    margin-top: 1.5em;
    margin-bottom: 0.7em;
    line-height: 1.3;
    font-weight: 600;
  }
  
  .post-content ul,
  .post-content ol {
    padding-left: 1.5em;
    margin-bottom: 1.3em;
  }
  
  .post-content li {
    margin-bottom: 0.7em;
    line-height: 1.6;
  }
  
  .post-content a {
    word-break: break-word;
    text-decoration: underline;
    text-underline-offset: 2px;
  }
  
  .post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-medium);
    margin: 1.5em 0;
  }
  
  .post-content blockquote {
    padding-left: 1em;
    border-left: 3px solid var(--color-three);
    margin: 1.5em 0;
    font-style: italic;
  }
  
  /* Mobile share section */
  .share-section {
    padding: var(--site-gap);
    margin-top: var(--row-gap);
  }
  
  .share-wrap {
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .share-item {
    min-width: 48px;
    min-height: 48px;
    padding: 12px;
  }
  
  /* Mobile headline */
  .headline-title {
    font-size: clamp(1.75rem, 7vw, 2.5rem);
    line-height: 1.2;
    word-break: break-word;
  }
  
  .headline-content {
    margin-top: var(--mini-gap);
  }
  
  /* Mobile back button */
  .g-back {
    font-size: var(--font-size-s);
    padding: 10px 0;
    margin-bottom: var(--mini-gap);
    display: inline-block;
    min-height: 44px;
    touch-action: manipulation;
  }
  
  /* Mobile progress bar */
  .g-progress {
    height: 2px;
  }
  
  /* Mobile TOC */
  .toc-section {
    margin-bottom: var(--mini-gap);
    padding: var(--mini-gap);
  }
}

/* ============================================
   Mobile Images
   ============================================ */

@media (max-width: 768px) {
  /* Optimize images for mobile */
  .g-img img {
    width: 100%;
    height: auto;
    object-fit: cover;
  }
  
  /* Mobile post images */
  .item-img {
    margin-bottom: var(--mini-gap);
    border-radius: var(--radius-medium);
    overflow: hidden;
  }
  
  /* Lazy loading optimization */
  img[loading="lazy"] {
    content-visibility: auto;
  }
  
  /* Better image aspect ratios on mobile */
  .g-orientation.is-portrait {
    aspect-ratio: 2/3;
  }
  
  .g-orientation.is-square {
    aspect-ratio: 1/1;
  }
  
  .g-orientation.is-classic {
    aspect-ratio: 4/3;
  }
  
  .g-orientation.is-landscape {
    aspect-ratio: 16/10;
  }
}

/* ============================================
   Mobile Scrolling
   ============================================ */

@media (max-width: 768px) {
  /* Smooth scrolling for mobile */
  html {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
  }
  
  /* Prevent horizontal scroll */
  body {
    overflow-x: hidden;
    width: 100%;
  }
  
  /* Optimize scroll containers */
  [data-widget-scroll] {
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    scroll-padding: var(--site-gap);
  }
  
  [data-widget-scroll] > * {
    scroll-snap-align: start;
  }
}

/* ============================================
   Mobile Forms & Inputs
   ============================================ */

@media (max-width: 768px) {
  input,
  textarea,
  select {
    font-size: 16px; /* Prevents zoom on iOS */
    min-height: 44px;
    padding: 12px 16px;
  }
  
  /* Better mobile form spacing */
  form {
    display: flex;
    flex-direction: column;
    gap: var(--mini-gap);
  }
}

/* ============================================
   Mobile Performance
   ============================================ */

@media (max-width: 768px) {
  /* Reduce animations on mobile for better performance */
  @media (prefers-reduced-motion: no-preference) {
    * {
      animation-duration: 0.2s !important;
      transition-duration: 0.2s !important;
    }
  }
  
  /* Optimize rendering */
  .g-loop,
  .item {
    contain: layout style paint;
  }
}

/* ============================================
   Mobile Accessibility
   ============================================ */

@media (max-width: 768px) {
  /* Better focus indicators for mobile */
  a:focus-visible,
  button:focus-visible {
    outline: 3px solid var(--color-one);
    outline-offset: 2px;
    border-radius: var(--radius-small);
  }
  
  /* Skip to content link */
  .skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-one);
    color: var(--color-font-two);
    padding: 8px 16px;
    z-index: 10000;
  }
  
  .skip-to-content:focus {
    top: 0;
  }
}

/* ============================================
   Mobile-Specific Enhancements
   ============================================ */

/* Pull-to-refresh prevention */
@media (max-width: 768px) {
  body {
    overscroll-behavior-y: contain;
    overscroll-behavior-x: none;
  }
  
  /* Prevent text selection on UI elements */
  button,
  [role="button"],
  .layout-switcher-btn,
  .homepage-layout-switcher-btn {
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
  }
  
  /* Better tap highlighting */
  a,
  button {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
  }
}

/* Better mobile spacing */
@media (max-width: 480px) {
  .g-section {
    margin-bottom: var(--row-gap);
  }
  
  .g-column {
    gap: var(--row-gap);
  }
  
  /* Mobile about section */
  .g-about {
    padding: var(--mini-gap) 0;
  }
  
  .g-about p {
    font-size: var(--font-size-l);
    line-height: 1.6;
  }
}

/* Mobile widget optimizations */
@media (max-width: 480px) {
  .widget-section {
    margin: var(--mini-gap) 0;
  }
  
  .widget-wrap[data-widget-scroll] {
    padding-bottom: 8px;
    margin-bottom: -8px;
  }
}

/* Mobile hero optimizations */
@media (max-width: 480px) {
  .headline-section {
    margin-top: var(--mini-gap);
    padding: var(--mini-gap) 0;
  }
  
  .headline-hero {
    margin-bottom: var(--mini-gap);
  }
}

/* Mobile pagination */
@media (max-width: 768px) {
  .pagination-section {
    padding: var(--row-gap) var(--site-gap);
  }
  
  .pagination-btn {
    width: 100%;
    min-height: 48px;
    font-size: var(--font-size-s);
  }
}

/* Mobile Layout Switchers */
@media (max-width: 768px) {
  /* Mobile layout switcher button */
  .layout-switcher-btn,
  .homepage-layout-switcher-btn {
    bottom: max(16px, env(safe-area-inset-bottom, 16px));
    right: 16px;
    padding: 12px 18px;
    font-size: var(--font-size-xxs);
    min-width: auto;
    min-height: 48px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
  }
  
  /* Mobile layout switcher dropdown */
  .layout-switcher-dropdown,
  .homepage-layout-switcher-dropdown {
    bottom: calc(max(16px, env(safe-area-inset-bottom, 16px)) + 64px);
    right: 16px;
    left: 16px;
    max-width: none;
    max-height: calc(100vh - 200px);
    padding: 16px;
    border-radius: var(--radius-large);
    -webkit-overflow-scrolling: touch;
  }
  
  .layout-option,
  .homepage-layout-option {
    padding: 16px;
    margin-bottom: 8px;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    touch-action: manipulation;
  }
  
  .layout-option strong,
  .homepage-layout-option strong {
    font-size: var(--font-size-s);
    margin-bottom: 4px;
  }
  
  .layout-option small,
  .homepage-layout-option small {
    font-size: var(--font-size-xxxs);
    line-height: 1.4;
  }
}