/**
 * Responsive Layout System for I Ching Oracle
 * Multiple breakpoints: 320px, 480px, 700px, 1024px, 1440px+
 * Mobile-first approach with progressive enhancement
 */

/* ============================================
   HAMBURGER MENU & MOBILE CONTROLS
   ============================================ */

/* Hamburger Trigger Button */
.hamburger-trigger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-alpha);
    border-radius: var(--radius-md);
    cursor: pointer;
    padding: var(--space-sm);
    gap: 5px;
}

.hamburger-line {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.hamburger-trigger:hover .hamburger-line {
    background: var(--gold-bright);
}

/* Mobile Header Controls */
.mobile-header-controls {
    display: none;
    align-items: center;
    gap: var(--space-sm);
}

.mobile-header-controls button {
    min-height: 44px;
    min-width: 44px;
    padding: var(--space-sm);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-alpha);
    border-radius: var(--radius-md);
    color: var(--gold);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mobile-header-controls button:hover {
    background: rgba(251, 191, 36, 0.2);
    border-color: var(--gold);
}

.mobile-header-controls .icon {
    width: 20px;
    height: 20px;
}

/* Hamburger Menu Overlay */
.hamburger-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-panel);
    z-index: var(--z-modal);
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
}

.hamburger-menu.active {
    transform: translateX(0);
}

.hamburger-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    color: var(--gold);
    font-size: var(--text-3xl);
    cursor: pointer;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.hamburger-close:hover {
    background: rgba(251, 191, 36, 0.1);
}

.mobile-menu-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-alpha);
}

.mobile-menu-section:last-child {
    border-bottom: none;
}

.mobile-menu-section h3,
.mobile-menu-section h4 {
    color: var(--gold);
    margin: 0;
    font-size: var(--text-lg);
}

.mobile-menu-section select {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-alpha);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-size: var(--text-base);
}

/* ============================================
   CSS CUSTOM PROPERTIES - RESPONSIVE SCALE
   ============================================ */
:root {
    /* Base spacing scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Typography scale */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.65vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.8vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
    --text-3xl: clamp(1.875rem, 1.6rem + 1.4vw, 2.5rem);
    --text-4xl: clamp(2.25rem, 1.9rem + 1.8vw, 3rem);
    
    /* Container widths - Fluid percentages */
    --container-sm: 100%;
    --container-md: 100%;
    --container-lg: 100%;
    --container-xl: 100%;
    --container-2xl: 100%;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.5);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.6);
    
    /* Z-index scale */
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* ============================================
   BREAKPOINT 1: MOBILE SMALL (320px - 479px)
   ============================================ */
@media (max-width: 479px) {
    :root {
        --container-padding: var(--space-sm);
        --grid-columns: 1;
        --hexagon-size: 80px;
    }
    
    /* Header - Mobile */
    header {
        padding: var(--space-sm) 0;
        position: sticky;
        top: 0;
        z-index: var(--z-sticky);
        background: var(--bg-void);
    }
    
    .header-content {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: space-between;
        align-items: center;
        gap: var(--space-sm);
        padding: 0 var(--space-sm);
    }
    
    .header-title {
        flex: 1;
        min-width: 0;
    }
    
    .header-title h1 {
        font-size: var(--text-base);
        flex-wrap: nowrap;
        justify-content: flex-start;
        gap: var(--space-xs);
    }
    
    .header-title h1 .icon {
        width: 20px;
        height: 20px;
    }
    
    .header-title p {
        font-size: var(--text-xs);
        text-align: left;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        margin: 0;
    }
    
    /* Mobile Controls */
    .header-controls {
        display: none;
    }
    
    .mobile-header-controls {
        display: flex;
        flex-direction: row;
        gap: var(--space-xs);
        width: auto;
    }
    
    .hamburger-trigger {
        display: flex;
    }
    
    /* Main Navigation - Bottom Sheet Style */
    .main-tabs {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--bg-panel);
        border-top: 1px solid var(--border-alpha);
        padding: var(--space-xs) 0;
        z-index: var(--z-fixed);
        display: flex;
        justify-content: space-around;
    }
    
    .nav-tab {
        flex: 1;
        padding: var(--space-sm);
        font-size: var(--text-xs);
        border-radius: 0;
        min-height: 44px;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2px;
    }
    
    .nav-tab .icon {
        width: 20px;
        height: 20px;
    }
    
    /* Bagua Strip - Horizontal Scroll */
    .bagua-strip-container {
        padding: var(--space-md) 0;
    }
    
    .bagua-hex-strip {
        gap: var(--space-sm);
        padding: 0 var(--space-sm);
        justify-content: flex-start;
    }
    
    .bagua-strip-item {
        min-width: 80px;
        padding: var(--space-xs) var(--space-sm);
    }
    
    .bagua-strip-symbol {
        width: 28px;
        height: 36px;
    }
    
    .bagua-strip-symbol svg {
        width: 100%;
        height: 100%;
    }
    
    .bagua-strip-name {
        font-size: 0.75rem;
        letter-spacing: 1px;
    }
    
    .trigram-chinese-text {
        font-size: 1.25rem;
    }
    
    .trigram-direction {
        font-size: 0.65rem;
    }
    
    /* Main Container */
    main.container {
        padding: var(--space-sm);
        padding-bottom: 80px; /* Space for bottom nav */
    }
    
    /* Wizard Steps - Full Width */
    .wizard-step {
        padding: var(--space-sm);
    }
    
    .step-title {
        font-size: var(--text-lg);
        margin-bottom: var(--space-md);
    }
    
    /* Panels - Stacked */
    .panel {
        padding: var(--space-md);
        margin-bottom: var(--space-md);
    }
    
    /* Question Input */
    #questionInput {
        font-size: var(--text-base);
        min-height: 80px;
    }
    
    /* Buttons - Full Width Touch */
    .btn-cast,
    .btn-memory,
    .btn-export {
        width: 100%;
        min-height: 48px;
        font-size: var(--text-base);
        padding: var(--space-sm) var(--space-md);
    }
    
    /* Results Layout - Stacked Cards */
    .results-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .result-card {
        padding: var(--space-md);
    }
    
    /* Hexagram Display - Compact */
    .hexagram-display {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .hexagram-lines {
        transform: scale(0.8);
    }
    
    /* Remedies Section - Accordion Style */
    .remedy-card {
        padding: var(--space-md);
    }
    
    .remedy-canvas {
        width: 100%;
        max-width: 280px;
        height: auto;
    }
    
    /* Bazi Display - Scrollable */
    .bazi-comparison-view {
        overflow-x: auto;
        padding: var(--space-sm);
    }
    
    .bazi-classical-table {
        font-size: var(--text-xs);
        min-width: 300px;
    }
    
    /* Export Panels - Stacked */
    .export-panels {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .export-panel {
        width: 100%;
    }
    
    /* Journal - Compact List */
    .question-list {
        gap: var(--space-sm);
    }
    
    .question-item {
        padding: var(--space-sm);
        font-size: var(--text-sm);
    }
    
    /* History Grid - Single Column */
    .history-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    /* Meditation - Full Screen Overlay */
    #meditation-overlay {
        padding: var(--space-md);
    }
    
    .meditation-title {
        font-size: var(--text-2xl);
    }
    
    .timer-display {
        font-size: var(--text-3xl);
    }
    
    /* Hamburger Menu - Full Screen Drawer */
    .hamburger-menu {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-void);
        z-index: var(--z-modal);
        flex-direction: column;
        padding: var(--space-lg);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    
    .hamburger-menu.active {
        transform: translateX(0);
    }
    
    .hamburger-close {
        position: absolute;
        top: var(--space-md);
        right: var(--space-md);
        background: none;
        border: none;
        color: var(--gold);
        font-size: var(--text-2xl);
        cursor: pointer;
    }
    
    /* Language Selector - Grid */
    .lang-selector {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
        width: 100%;
    }
    
    .lang-btn {
        padding: var(--space-md);
        font-size: var(--text-base);
    }
    
    /* Accessibility Controls */
    .accessibility-controls {
        flex-direction: column;
        gap: var(--space-sm);
        width: 100%;
    }
    
    .acc-btn {
        flex: 1;
        min-height: 48px;
        font-size: var(--text-base);
    }
}

/* ============================================
   BREAKPOINT 2: MOBILE LARGE (480px - 699px)
   ============================================ */
@media (min-width: 480px) and (max-width: 699px) {
    :root {
        --container-padding: var(--space-md);
        --grid-columns: 2;
        --hexagon-size: 100px;
    }
    
    /* Header */
    header {
        position: sticky;
        top: 0;
        z-index: var(--z-sticky);
        background: var(--bg-void);
    }
    
    .header-content {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: space-between;
        align-items: center;
        gap: var(--space-md);
        padding: var(--space-sm) var(--space-md);
    }
    
    .header-title {
        flex: 1;
        text-align: left;
    }
    
    .header-title h1 {
        font-size: var(--text-lg);
        justify-content: flex-start;
    }
    
    .header-controls {
        display: none;
    }
    
    .mobile-header-controls {
        display: flex;
        flex-direction: row;
        gap: var(--space-sm);
        width: auto;
    }
    
    .hamburger-trigger {
        display: flex;
    }
    
    /* Main Navigation - Bottom Bar */
    .main-tabs {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        padding: var(--space-xs) var(--space-sm);
    }
    
    .nav-tab {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--text-sm);
    }
    
    /* Main Container */
    main.container {
        padding: var(--space-md);
        padding-bottom: 80px;
    }
    
    /* Results Grid - Auto-fit fluid columns */
    .results-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--space-md);
    }
    
    /* History Grid - Auto-fit fluid */
    .history-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }
    
    /* Bagua Strip */
    .bagua-strip-item {
        min-width: 100px;
        padding: 16px 12px;
    }
    
    .bagua-strip-symbol {
        width: 32px;
        height: 40px;
    }
    
    /* Panels */
    .panel {
        padding: var(--space-lg);
    }
    
    /* Export Panels - Side by Side */
    .export-panels {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .export-panel {
        flex: 1 1 calc(50% - var(--space-sm));
    }
    
    /* Buttons */
    .btn-cast,
    .btn-memory {
        width: auto;
        min-width: 200px;
    }
    
    /* Hamburger Menu */
    .hamburger-menu {
        width: 80%;
        max-width: 360px;
        right: 0;
        left: auto;
        transform: translateX(100%);
        box-shadow: -4px 0 20px rgba(0,0,0,0.5);
    }
    
    .hamburger-menu.active {
        transform: translateX(0);
    }
    
    /* Main Navigation - Bottom Bar */
    .main-tabs {
        padding: var(--space-xs) 0;
    }
    
    .nav-tab {
        padding: var(--space-xs) var(--space-sm);
        font-size: var(--text-xs);
    }
}

/* ============================================
   BREAKPOINT 3: TABLET (700px - 1023px)
   ============================================ */
@media (min-width: 700px) and (max-width: 1023px) {
    :root {
        --container-padding: var(--space-lg);
        --grid-columns: 3;
        --hexagon-size: 120px;
    }
    
    /* Header - Full Layout */
    header {
        position: relative;
    }
    
    .header-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: var(--space-md) var(--space-lg);
    }
    
    .header-title h1 {
        font-size: var(--text-xl);
    }
    
    .header-title p {
        white-space: normal;
        overflow: visible;
    }
    
    .header-controls {
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-md);
        justify-content: flex-end;
        align-items: center;
    }
    
    .mobile-header-controls,
    .hamburger-trigger,
    .hamburger-menu {
        display: none !important;
    }
    
    /* Main Navigation - Top Tabs */
    .main-tabs {
        position: static;
        border-top: none;
        border-bottom: 1px solid var(--border-alpha);
        padding: var(--space-sm) var(--space-lg);
        justify-content: flex-start;
        gap: var(--space-sm);
    }
    
    .nav-tab {
        flex: 0 1 auto;
        border-radius: var(--radius-md);
        min-height: 40px;
        flex-direction: row;
        gap: var(--space-xs);
    }
    
    /* Main Container */
    main.container {
        padding: var(--space-lg);
        padding-bottom: var(--space-lg);
    }
    
    /* Wizard Layout */
    .wizard-container {
        max-width: 800px;
        margin: 0 auto;
    }
    
    /* Results Grid - Auto-fit fluid columns */
    .results-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--space-lg);
    }
    
    .result-card:nth-child(1) {
        grid-column: span 2;
    }
    
    /* Hexagram Display */
    .hexagram-display {
        flex-direction: row;
        gap: var(--space-xl);
    }
    
    /* Remedies Grid - Auto-fit fluid */
    .remedies-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: var(--space-lg);
    }
    
    /* History Grid - Auto-fit fluid */
    .history-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
    
    /* Export Panels */
    .export-panels {
        flex-direction: row;
        gap: var(--space-md);
    }
    
    /* Bazi Display */
    .bazi-comparison-view {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }
    
    /* Bagua Strip */
    .bagua-strip-item {
        min-width: 120px;
        padding: 20px 16px;
    }
    
    .bagua-strip-symbol {
        width: 36px;
        height: 44px;
    }
    
    /* Controls Group */
    .control-group {
        flex-direction: row;
        align-items: center;
        gap: var(--space-sm);
    }
}

/* ============================================
   BREAKPOINT 4: DESKTOP (1024px - 1439px)
   ============================================ */
@media (min-width: 1024px) and (max-width: 1439px) {
    :root {
        --container-padding: var(--space-xl);
        --grid-columns: 4;
        --hexagon-size: 140px;
    }
    
    /* Header - Fluid width */
    .header-content {
        width: 100%;
        max-width: none;
        padding: 0 5%;
    }
    
    .header-controls {
        flex-wrap: nowrap;
        gap: var(--space-lg);
    }
    
    /* Main Navigation - Fluid width */
    .main-tabs {
        width: 100%;
        max-width: none;
        padding: var(--space-md) 5%;
    }
    
    /* Main Container - Fluid width */
    main.container {
        width: 100%;
        max-width: none;
        padding: var(--space-xl) 5%;
    }
    
    /* Results Layout - Fluid grid */
    .results-content {
        display: grid;
        grid-template-columns: 1fr 300px;
        gap: var(--space-xl);
    }
    
    .results-main {
        grid-column: 1;
    }
    
    .results-sidebar {
        grid-column: 2;
        position: sticky;
        top: var(--space-xl);
        height: fit-content;
    }
    
    /* Results Grid - Auto-fit fluid columns */
    .results-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .result-card:nth-child(1) {
        grid-column: span 2;
    }
    
    .result-card:nth-child(2) {
        grid-column: span 2;
    }
    
    /* Remedies Grid - Auto-fit fluid */
    .remedies-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    /* History Grid - Auto-fit fluid */
    .history-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    /* Bazi Display */
    .bazi-comparison-view {
        grid-template-columns: 1fr 1fr 200px;
    }
    
    /* Bagua Hex Layout - Full Display */
    .bagua-hex-layout {
        height: 700px;
    }
    
    .trigram-card-node {
        width: 160px;
        min-height: 180px;
    }
}

/* ============================================
   BREAKPOINT 5: LARGE DESKTOP (1440px+)
   ============================================ */
@media (min-width: 1440px) {
    :root {
        --container-padding: var(--space-2xl);
        --grid-columns: 6;
        --hexagon-size: 160px;
    }
    
    /* Header - Fluid width */
    .header-content {
        width: 100%;
        max-width: none;
        padding: 0 4%;
    }
    
    .header-title h1 {
        font-size: var(--text-2xl);
    }
    
    .header-title p {
        font-size: var(--text-base);
    }
    
    /* Main Navigation - Fluid width */
    .main-tabs {
        width: 100%;
        max-width: none;
        padding: var(--space-md) 4%;
    }
    
    .nav-tab {
        padding: var(--space-md) var(--space-xl);
        font-size: var(--text-base);
    }
    
    /* Main Container - Fluid width */
    main.container {
        width: 100%;
        max-width: none;
        padding: var(--space-2xl) 4%;
    }
    
    /* Results Layout */
    .results-content {
        grid-template-columns: 1fr 350px;
        gap: var(--space-2xl);
    }
    
    /* Results Grid - Auto-fit fluid columns */
    .results-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
    
    .result-card:nth-child(1) {
        grid-column: span 2;
    }
    
    .result-card:nth-child(2) {
        grid-column: span 2;
    }
    
    .result-card:nth-child(3) {
        grid-column: span 2;
    }
    
    /* Remedies Grid - Auto-fit fluid */
    .remedies-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    /* History Grid - Auto-fit fluid */
    .history-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
    
    /* Bagua Hex Layout - Fluid max-width */
    .bagua-hex-layout {
        height: 800px;
        max-width: 100%;
    }
    
    .trigram-card-node {
        width: 180px;
        min-height: 200px;
        padding: var(--space-lg);
    }
    
    /* Bazi Display */
    .bazi-comparison-view {
        grid-template-columns: 1fr 1fr 250px 200px;
    }
    
    /* Panels - Larger Padding */
    .panel {
        padding: var(--space-2xl);
    }
    
    /* Typography Scale Up */
    .step-title {
        font-size: var(--text-2xl);
    }
    
    .panel h2 {
        font-size: var(--text-xl);
    }
}

/* ============================================
   REMEDIES GRID LAYOUT
   ============================================ */

/* Remedies Container - Grid Layout */
#remediesContent {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    width: 100%;
}

/* Mobile Large: 1 column still, but wider cards */
@media (min-width: 480px) {
    #remediesContent {
        gap: var(--space-xl);
    }
}

/* Single column layout for all screen sizes - better readability */
@media (min-width: 700px) {
    #remediesContent {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        width: 100%;
        max-width: 100%;
    }
    
    /* Full width for remedy items */
    #remediesContent .remedy-item-wrapper {
        width: 100%;
        max-width: 100%;
    }
}

/* Desktop: Larger containers, still 1 column */
@media (min-width: 1024px) {
    #remediesContent {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        width: 100%;
        max-width: 100%;
    }
}

/* Large Desktop: Maximum screen usage, still 1 column */
@media (min-width: 1440px) {
    #remediesContent {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        width: 100%;
        max-width: 100%;
    }
}

/* Single column override for mobile */
@media (max-width: 699px) {
    #remediesContent {
        grid-template-columns: 1fr;
    }
    
    .remedy-item-wrapper {
        width: 100%;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Display Utilities */
.hidden { display: none !important; }
.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.grid { display: grid; }

/* Flex Utilities */
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }

/* Grid Utilities */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Spacing Utilities */
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Mobile-only utilities */
@media (min-width: 700px) {
    .mobile-only { display: none !important; }
}

@media (max-width: 699px) {
    .desktop-only { display: none !important; }
}

/* Print styles */
@media print {
    .no-print { display: none !important; }
    
    body {
        background: white;
        color: black;
    }
    
    .panel {
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}