/* ===================================
   Markdown Live Editor - Responsive
   Version: 0.1.0
   Mobile-First Responsive Design
   =================================== */

/* Mobile First: Base styles in main.css are for mobile */

/* Small Mobile Devices (320px - 480px) */
@media screen and (max-width: 480px) {
    :root {
        --toolbar-height: auto;
        --font-size-sm: 0.8rem;
        --spacing-sm: 6px;
        --spacing-md: 12px;
    }

    .toolbar {
        flex-direction: column;
        height: auto;
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .toolbar__section {
        width: 100%;
        justify-content: center;
    }

    .toolbar__section--center {
        order: 3;
        flex-wrap: wrap;
        justify-content: flex-start;
    }

    .toolbar__section--right {
        order: 2;
        justify-content: space-between;
    }

    .toolbar__title {
        font-size: var(--font-size-base);
    }

    .toolbar__button {
        min-width: 32px;
        height: 32px;
        padding: var(--spacing-xs);
        font-size: 0.7rem;
    }

    .toolbar__select {
        flex: 1;
        min-width: 100px;
    }

    .main-content {
        grid-template-columns: 1fr;
        grid-template-rows: 50vh 50vh;
        height: calc(100vh - 150px); /* Approximate for variable toolbar */
    }

    .editor-panel,
    .preview-panel {
        border-right: none;
        border-bottom: var(--border-width) solid var(--color-border);
    }

    .preview-panel {
        border-bottom: none;
    }

    .panel-header {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .panel-title {
        font-size: var(--font-size-sm);
    }

    .editor-textarea,
    .preview-content {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }

    .footer-text {
        font-size: 0.7rem;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    /* Mobile collapsed panel adjustments */
    .editor-panel.collapsed .panel-header {
        position: relative;
        writing-mode: horizontal-tb;
        text-orientation: initial;
        width: 100%;
        height: 40px;
        min-height: 40px;
        padding: var(--spacing-xs) var(--spacing-sm);
        border-right: none;
        border-bottom: var(--border-width) solid var(--color-border);
    }

    .preview-panel.collapsed .panel-header {
        position: relative;
        writing-mode: horizontal-tb;
        text-orientation: initial;
        width: 100%;
        height: 40px;
        min-height: 40px;
        padding: var(--spacing-xs) var(--spacing-sm);
        border-right: none;
        border-bottom: var(--border-width) solid var(--color-border);
    }

    .editor-panel.collapsed .panel-header__controls,
    .preview-panel.collapsed .panel-header__controls {
        flex-direction: row;
    }

    .editor-panel.collapsed,
    .preview-panel.collapsed {
        height: 40px;
        min-height: 40px;
    }

    .editor-panel.expanded,
    .preview-panel.expanded {
        grid-row: 1 / -1;
    }
}

/* Tablet Portrait (481px - 767px) */
@media screen and (min-width: 481px) and (max-width: 767px) {
    :root {
        --toolbar-height: 80px;
    }

    .toolbar {
        flex-wrap: wrap;
        height: auto;
        min-height: var(--toolbar-height);
    }

    .toolbar__section--center {
        order: 3;
        width: 100%;
        justify-content: flex-start;
    }

    .main-content {
        grid-template-columns: 1fr;
        grid-template-rows: 50vh 50vh;
        height: calc(100vh - var(--toolbar-height) - var(--footer-height));
    }

    .editor-panel {
        border-right: none;
        border-bottom: var(--border-width) solid var(--color-border);
    }
}

/* Tablet Landscape (768px - 1024px) */
@media screen and (min-width: 768px) and (max-width: 1024px) {
    .toolbar__section--center {
        gap: var(--spacing-xs);
    }

    .toolbar__button {
        min-width: 34px;
        height: 34px;
        padding: var(--spacing-xs);
    }

    .main-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Desktop Small (1025px - 1366px) */
@media screen and (min-width: 1025px) and (max-width: 1366px) {
    .main-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Desktop Large (1367px - 1920px) */
@media screen and (min-width: 1367px) {
    :root {
        --font-size-base: 1.0625rem; /* 17px */
        --spacing-md: 20px;
        --spacing-lg: 28px;
    }

    .toolbar {
        padding: 0 var(--spacing-lg);
    }

    .editor-textarea,
    .preview-content {
        padding: var(--spacing-lg);
    }

    .main-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Ultra Wide (1921px+) */
@media screen and (min-width: 1921px) {
    :root {
        --font-size-base: 1.125rem; /* 18px */
        --spacing-lg: 32px;
        --spacing-xl: 48px;
    }

    .app-container {
        max-width: 2400px;
        margin: 0 auto;
    }

    .main-content {
        grid-template-columns: 1.2fr 1fr;
    }
}

/* Landscape Orientation */
@media screen and (orientation: landscape) and (max-height: 600px) {
    :root {
        --toolbar-height: 50px;
        --footer-height: 30px;
        --spacing-sm: 6px;
        --spacing-md: 10px;
    }

    .toolbar {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .toolbar__title {
        font-size: var(--font-size-base);
    }

    .toolbar__button {
        min-width: 32px;
        height: 32px;
    }

    .panel-header {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* Print Styles */
@media print {
    .toolbar,
    .app-footer,
    .editor-panel {
        display: none !important;
    }

    .main-content {
        display: block;
        height: auto;
    }

    .preview-panel {
        border: none;
    }

    .panel-header {
        display: none;
    }

    .preview-content {
        padding: 0;
        overflow: visible;
    }

    /* Ensure good print quality */
    body {
        color: #000;
        background: #fff;
    }

    .preview-content a {
        text-decoration: underline;
        color: #000;
    }

    .preview-content a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }

    /* Page breaks */
    .preview-content h1,
    .preview-content h2,
    .preview-content h3 {
        page-break-after: avoid;
    }

    .preview-content pre,
    .preview-content blockquote {
        page-break-inside: avoid;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --color-border: currentColor;
    }

    .toolbar__button {
        border-width: 2px;
    }
}

/* Dark Mode Preference */
@media (prefers-color-scheme: dark) {
    html:not([class*="theme-"]) {
        --color-background: #1e1e1e;
        --color-surface: #2d2d30;
        --color-surface-hover: #3e3e42;
        --color-border: #3e3e42;
        --color-text: #d4d4d4;
        --color-text-secondary: #9d9d9d;
        --color-text-muted: #6e6e6e;
        --color-editor-bg: #1e1e1e;
        --color-editor-text: #d4d4d4;
        --color-preview-bg: #1e1e1e;
        --color-preview-text: #d4d4d4;
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .toolbar__button,
    .panel-button {
        min-width: 44px;
        min-height: 44px;
    }

    .toolbar__select {
        min-height: 44px;
    }
}

/* Focus Visible for Keyboard Navigation */
@media (any-hover: hover) {
    .toolbar__button:focus-visible,
    .toolbar__select:focus-visible,
    .panel-button:focus-visible {
        outline: 3px solid var(--color-primary);
        outline-offset: 2px;
    }
}

/* Container Queries Support (Future-proof) */
@supports (container-type: inline-size) {
    .toolbar {
        container-type: inline-size;
        container-name: toolbar;
    }

    @container toolbar (max-width: 600px) {
        .toolbar__section--center {
            flex-wrap: wrap;
        }
    }
}