@media (max-width: var(--breakpoint-sm)) {
    html {
        font-size: var(--font-size-base);
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section-title {
        margin-bottom: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .form-control {
        font-size: var(--font-size-sm);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .grid-2,
    .grid-3,
    .grid-4,
    .grid-5 {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .form-row {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .form-col {
        width: 100%;
    }
    
    .navbar {
        padding: var(--spacing-sm) 0;
    }
    
    .nav-link {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .clock-container {
        display: none;
    }
}

@media (min-width: var(--breakpoint-sm)) and (max-width: var(--breakpoint-md)) {
    html {
        font-size: var(--font-size-base);
    }
    
    .grid-3,
    .grid-4,
    .grid-5 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (min-width: var(--breakpoint-md)) and (max-width: var(--breakpoint-lg)) {
    html {
        font-size: var(--font-size-lg);
    }
    
    .grid-4,
    .grid-5 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .container {
        padding: 0 var(--spacing-lg);
    }
}

@media (min-width: var(--breakpoint-lg)) and (max-width: var(--breakpoint-xl)) {
    html {
        font-size: var(--font-size-lg);
    }
    
    .grid-5 {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .container {
        padding: 0 var(--spacing-xl);
    }
}

@media (min-width: var(--breakpoint-xl)) {
    html {
        font-size: var(--font-size-lg);
    }
    
    .container {
        padding: 0 var(--spacing-2xl);
    }
}

@media (max-width: var(--breakpoint-md)) {
    .navbar .nav-list {
        display: none;
    }
    
    .navbar .mobile-menu-toggle {
        display: flex;
    }
    
    .navbar .mobile-menu.open .nav-list {
        display: flex;
    }
    
    .iframe-container {
        margin-top: var(--spacing-md);
    }
    
    #mainIframe {
        min-height: 400px;
    }
}

@media (max-width: var(--breakpoint-sm)) {
    .comprehensive-info-row {
        flex-direction: column;
    }
    
    .comprehensive-info-left,
    .comprehensive-info-right {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .pillar-split-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .pillar-split-left,
    .pillar-split-right {
        width: 100%;
    }
    
    .detail-info-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .dayun-horizontal {
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
        gap: var(--spacing-xs);
    }
    
    .liunian-horizontal {
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
        gap: var(--spacing-xs);
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --bg-tertiary: #3d3d3d;
        --text-primary: #ffffff;
        --text-secondary: #b0b0b0;
        --text-muted: #808080;
        --border-color: #404040;
        --border-light: #505050;
        --border-dark: #606060;
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.3);
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .clock-container {
        display: none;
    }
}

@media print {
    .navbar,
    .clock-container,
    .mobile-menu-toggle,
    .btn {
        display: none !important;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
    
    body {
        background-color: white;
        color: black;
    }
}