/**
 * Mobile & Responsive Styles for DeskShare PWA
 *
 * Provides touch-friendly controls, responsive layout,
 * and mobile-optimized video viewing.
 *
 * For junior developers:
 * - Media queries (@media) apply styles only when screen matches the condition.
 * - "max-width: 768px" targets tablets and phones in portrait.
 * - "max-width: 480px" targets small phones.
 * - touch-action CSS controls how the browser handles touch gestures.
 * - -webkit-tap-highlight-color removes the blue tap flash on mobile browsers.
 */

/* ============================================
   BASE RESPONSIVE OVERRIDES
   ============================================ */

/* Tablet and smaller (portrait iPad, large phones) */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    h1 {
        font-size: 1.3rem;
        margin: 10px 0;
    }

    /* Stack label and input vertically on mobile */
    label {
        display: block;
        width: 100%;
        margin-bottom: 5px;
    }

    input[type="text"] {
        width: 100%;
        box-sizing: border-box;
        font-size: 16px; /* Prevents iOS zoom on focus */
    }

    /* Make buttons full-width and touch-friendly */
    .control-group {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    button {
        flex: 1 1 auto;
        min-width: 100px;
        min-height: 44px; /* Apple's recommended minimum touch target */
        font-size: 14px;
        margin-right: 0;
        -webkit-tap-highlight-color: transparent;
    }

    /* Video container takes full width */
    .video-container {
        min-height: 250px;
        border-radius: 4px;
    }

    video {
        width: 100%;
        height: auto;
    }

    /* Stats grid: 2 columns on tablet */
    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        padding: 10px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .stat-value {
        font-size: 18px;
    }

    /* Keyboard shortcuts grid: single column on mobile */
    .keyboard-shortcuts {
        grid-template-columns: 1fr;
    }

    /* Info box adjustments */
    .info-box {
        padding: 10px;
        font-size: 14px;
    }
}

/* Small phones */
@media (max-width: 480px) {
    body {
        padding: 5px;
    }

    h1 {
        font-size: 1.1rem;
    }

    .controls {
        padding: 12px;
    }

    /* Stack buttons vertically on small screens */
    .control-group {
        flex-direction: column;
    }

    button {
        width: 100%;
        min-height: 48px;
        font-size: 15px;
    }

    .video-container {
        min-height: 200px;
    }

    /* Stats: single column on small phones */
    .stats {
        grid-template-columns: 1fr;
    }

    .stat-item {
        padding: 5px 0;
    }

    .stat-value {
        font-size: 16px;
    }

    .stat-label {
        font-size: 11px;
    }
}

/* ============================================
   TOUCH-SPECIFIC STYLES
   ============================================ */

/* Only apply touch styles on devices that support touch */
@media (pointer: coarse) {
    /* Prevent text selection while controlling remote desktop */
    .video-container.control-active {
        user-select: none;
        -webkit-user-select: none;
        /* Prevent browser gestures on the video (scroll, zoom, etc.) */
        touch-action: none;
    }

    /* Show cursor on touch devices (desktop hides it during control) */
    .video-container.control-active video {
        cursor: default;
    }

    /* Larger touch targets for interactive elements */
    button {
        min-height: 48px;
        padding: 12px 20px;
    }

    input[type="text"] {
        min-height: 44px;
        padding: 10px 12px;
    }

    /* Remove hover effects on touch devices (they cause sticky states) */
    button:hover {
        background: #4a9eff;
    }

    button.success:hover {
        background: #4caf50;
    }

    button.warning:hover {
        background: #ff9800;
    }

    button:disabled:hover {
        background: #666;
    }
}

/* ============================================
   LANDSCAPE ORIENTATION ON MOBILE
   ============================================ */

/* Landscape phone: maximize video area */
@media (max-height: 500px) and (orientation: landscape) {
    body {
        padding: 5px;
    }

    h1 {
        display: none; /* Hide title to save space */
    }

    .controls {
        padding: 8px;
        margin-bottom: 5px;
    }

    /* Compact controls in landscape */
    .control-group {
        display: flex;
        flex-direction: row;
        gap: 5px;
    }

    label {
        display: none; /* Hide labels in landscape to save space */
    }

    input[type="text"] {
        flex: 1;
        min-width: 0;
    }

    button {
        min-height: 36px;
        padding: 6px 12px;
        font-size: 13px;
    }

    /* Video takes most of the screen */
    .video-container {
        min-height: 0;
        height: calc(100vh - 120px);
    }

    /* Hide stats in landscape to maximize video */
    .stats,
    .stats-grid,
    .info-box {
        display: none;
    }
}

/* ============================================
   PWA STANDALONE MODE
   ============================================ */

/* When running as installed PWA (no browser chrome) */
@media (display-mode: standalone) {
    body {
        /* Add safe area insets for notched phones (iPhone X+) */
        padding-top: env(safe-area-inset-top, 10px);
        padding-bottom: env(safe-area-inset-bottom, 10px);
        padding-left: env(safe-area-inset-left, 10px);
        padding-right: env(safe-area-inset-right, 10px);
    }

    /* Slightly larger video in standalone mode */
    .video-container {
        border-radius: 0;
    }
}

/* ============================================
   FULLSCREEN MODE OVERRIDES
   ============================================ */

/* When video container is in fullscreen */
.video-container:fullscreen,
.video-container:-webkit-full-screen {
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-container:fullscreen video,
.video-container:-webkit-full-screen video {
    max-width: 100vw;
    max-height: 100vh;
    object-fit: contain;
}