/**
 * 老陈AutoZIP - 响应式样式
 * 适配各种屏幕尺寸
 */

/* ========================================
   大屏桌面 (1280px+)
   ======================================== */

@media (min-width: 1280px) {
  .container {
    padding: 0 var(--space-8);
  }
  
  .features-grid {
    gap: var(--space-8);
  }
}

/* ========================================
   桌面 (1024px - 1279px)
   ======================================== */

@media (max-width: 1279px) {
  .hero-container {
    gap: var(--space-10);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .usecases-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
  
  .footer-column:last-child {
    display: none;
  }
}

/* ========================================
   平板 (768px - 1023px)
   ======================================== */

@media (max-width: 1023px) {
  :root {
    --text-display: 2.5rem;
    --text-h1: 2rem;
    --text-h2: 1.5rem;
    --space-20: 4rem;
    --space-16: 3rem;
  }
  
  .navbar-nav {
    gap: var(--space-6);
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-10);
  }
  
  .hero-content {
    order: 1;
  }
  
  .hero-preview {
    order: 0;
  }
  
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .app-window {
    max-width: 400px;
    transform: none;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
  
  .tutorial-steps {
    flex-direction: column;
    gap: var(--space-8);
  }
  
  .tutorial-steps::before {
    display: none;
  }
  
  .tutorial-step {
    display: flex;
    text-align: left;
    gap: var(--space-4);
  }
  
  .step-icon-wrapper {
    margin: 0;
    flex-shrink: 0;
  }
  
  .usecases-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .download-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-10);
  }
  
  .download-actions {
    align-items: center;
  }
  
  .requirements-list {
    align-items: center;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
  
  .footer-brand {
    grid-column: 1 / -1;
    max-width: 100%;
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
  }
}

/* ========================================
   手机横屏/小平板 (640px - 767px)
   ======================================== */

@media (max-width: 767px) {
  :root {
    --text-display: 2rem;
    --text-h1: 1.75rem;
    --text-h2: 1.375rem;
    --text-h3: 1.125rem;
    --container-padding: 1rem;
    --space-20: 3rem;
    --space-16: 2.5rem;
  }
  
  /* 移动端导航 */
  .navbar-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-4);
    transform: translateX(100%);
    transition: transform var(--duration-smooth) var(--ease-out);
    align-items: flex-start;
  }
  
  .navbar-nav.active {
    transform: translateX(0);
  }
  
  .nav-link {
    font-size: var(--text-h4);
    padding: var(--space-2) 0;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .navbar-actions {
    display: none;
  }
  
  .hero {
    padding-top: calc(var(--header-height) + var(--space-6));
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: var(--text-body-lg);
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
  }
  
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
  
  .stat {
    text-align: center;
  }
  
  .app-window {
    max-width: 100%;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-card {
    text-align: left;
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
  }
  
  .feature-icon {
    margin: 0;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
  }
  
  .feature-card h3 {
    margin-bottom: var(--space-1);
  }
  
  .usecases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .usecase-card {
    padding: var(--space-4);
  }
  
  .usecase-icon {
    width: 48px;
    height: 48px;
  }
  
  .download-actions .btn-large {
    width: 100%;
    justify-content: center;
  }
  
  .download-links {
    flex-direction: column;
    gap: var(--space-3);
    align-items: center;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-8);
  }
  
  .footer-column h4 {
    margin-bottom: var(--space-3);
  }
  
  .footer-links {
    align-items: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
  
  .back-to-top {
    width: 44px;
    height: 44px;
    bottom: 20px;
    right: 20px;
  }
}

/* ========================================
   手机竖屏 (< 640px)
   ======================================== */

@media (max-width: 639px) {
  .hero-badge {
    font-size: 11px;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .hero-description {
    font-size: var(--text-body);
  }
  
  .section-title {
    font-size: var(--text-h2);
  }
  
  .section-subtitle {
    font-size: var(--text-body);
  }
  
  .window-content {
    padding: var(--space-4);
  }
  
  .tutorial-step {
    flex-direction: column;
    text-align: center;
  }
  
  .step-icon-wrapper {
    margin: 0 auto var(--space-3);
  }
  
  .usecases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }
  
  .usecase-icon {
    width: 40px;
    height: 40px;
  }
  
  .usecase-card h3 {
    font-size: var(--text-body);
  }
  
  .usecase-card p {
    font-size: var(--text-caption);
  }
  
  .download-note {
    flex-direction: column;
    text-align: center;
    gap: var(--space-2);
  }
}

/* ========================================
   小屏手机 (< 400px)
   ======================================== */

@media (max-width: 399px) {
  :root {
    --text-display: 1.75rem;
    --text-h1: 1.5rem;
  }
  
  .hero-title {
    font-size: 1.5rem;
  }
  
  .usecases-grid {
    grid-template-columns: 1fr;
  }
  
  .btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-body-sm);
  }
  
  .feature-card {
    flex-direction: column;
    text-align: center;
  }
  
  .feature-icon {
    margin: 0 auto var(--space-3);
  }
}

/* ========================================
   高度适配 (短屏设备)
   ======================================== */

@media (max-height: 700px) and (min-width: 768px) {
  .hero {
    min-height: auto;
    padding: calc(var(--header-height) + var(--space-10)) 0 var(--space-10);
  }
  
  .hero-stats {
    margin-top: var(--space-6);
  }
}

/* ========================================
   暗黑模式支持
   ======================================== */

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
  }
  
  body:not([data-theme="light"]) {
    --bg-primary: var(--dark-bg);
    --bg-secondary: var(--dark-card);
    --bg-elevated: var(--dark-elevated);
    --text-primary: var(--gray-100);
    --text-secondary: var(--gray-400);
    --text-muted: var(--gray-600);
    --border-color: var(--dark-border);
  }
  
  body:not([data-theme="light"]) .navbar {
    background: rgba(10, 10, 15, 0.85);
    border-bottom-color: var(--dark-border);
  }
  
  body:not([data-theme="light"]) .navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
  }
  
  body:not([data-theme="light"]) .navbar-nav {
    background: var(--dark-bg);
  }
  
  body:not([data-theme="light"]) .nav-link {
    color: var(--gray-400);
  }
  
  body:not([data-theme="light"]) .menu-toggle span {
    background: var(--gray-100);
  }
  
  body:not([data-theme="light"]) .feature-card,
  body:not([data-theme="light"]) .usecase-card {
    background: var(--dark-card);
    border-color: var(--dark-border);
  }
  
  body:not([data-theme="light"]) .code-inline {
    background: var(--dark-elevated);
    color: var(--te-orange);
  }
  
  body:not([data-theme="light"]) .section-subtitle {
    color: var(--gray-500);
  }
}

/* ========================================
   打印样式
   ======================================== */

@media print {
  .navbar,
  .back-to-top,
  .hero-preview,
  .hero-actions,
  .download-actions {
    display: none !important;
  }
  
  .hero {
    min-height: auto;
    padding: var(--space-6) 0;
    background: white !important;
    color: black !important;
  }
  
  .hero-title {
    color: black !important;
    -webkit-text-fill-color: black !important;
  }
  
  .section {
    padding: var(--space-6) 0;
    page-break-inside: avoid;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
  
  a {
    text-decoration: underline;
    color: #000;
  }
  
  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }
}

/* ========================================
   触屏设备优化
   ======================================== */

@media (hover: none) and (pointer: coarse) {
  .btn:hover {
    transform: none;
  }
  
  .card-hover:hover {
    transform: none;
  }
  
  .feature-card:hover .feature-icon {
    transform: none;
  }
  
  .app-window {
    transform: none;
  }
  
  .back-to-top:hover {
    transform: none;
  }
}

/* ========================================
   高对比度模式
   ======================================== */

@media (prefers-contrast: high) {
  :root {
    --primary-500: #0066CC;
    --primary-600: #0052A3;
    --gray-600: #000000;
    --gray-400: #333333;
  }
  
  .btn-primary {
    border: 2px solid currentColor;
  }
  
  .card {
    border-width: 2px;
  }
  
  .nav-link::after {
    height: 3px;
  }
}