/* ============================================
   LAYOUT
   Main app structure, containers, and panels
   ============================================ */

/* App Container */
.app-container {
    width: 100%;
    display: grid;
    grid-template-rows: auto 1fr;
    height: 100%;
    overflow: hidden;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
}

/* Main Two-Column Layout */
.main-layout {
    display: grid;
    grid-template-columns: auto 12px 1fr;
    gap: 20px;
    min-height: 0;
    overflow: hidden;
    height: 100%;
    transition: all 0.3s ease;
}

.main-layout.resizing {
    cursor: col-resize;
    user-select: none;
    transition: none;
}

/* Left Panel: Search */
.search-panel {
    min-width: 0;
    overflow: hidden;
    transition: width 0.2s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.search-panel.collapsed {
    width: 0 !important;
    overflow: hidden;
    padding: 0;
}

.search-panel.collapsed * {
    visibility: hidden;
}

/* Panel Divider */
.panel-divider {
    width: 8px;
    background: transparent;
    border-right: 1px solid var(--divider-border);
    cursor: col-resize;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 60px;
    position: relative;
    height: 100%;
    transition: background 0.2s ease;
}

.panel-divider:hover {
    border-right-color: var(--accent-color);
    background: transparent;
}

.panel-divider:active {
    border-right-color: var(--accent-color);
    box-shadow: 1px 0 8px var(--accent-glow);
    background: transparent;
}

/* Collapse Button */
.collapse-btn {
    width: 20px;
    height: 40px;
    border: none;
    background: var(--divider-btn-bg);
    color: var(--divider-btn-text);
    border-radius: 4px;
    cursor: pointer;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 10;
}

.collapse-btn:hover {
    background: var(--accent-color);
    color: #fff;
}

.mobile-text {
    display: none;
}

/* Right Panel */
.right-panel {
    min-width: 320px;
    height: 100%;
    overflow: hidden;
    background: var(--panel-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Panel Content */
.panel-content {
    display: grid;
    grid-template-rows: 1fr;
    overflow: hidden;
    padding: 16px;
    flex: 1;
}

.panel-content>* {
    min-width: 0;
    min-height: 0;
}

/* Common panel styles */
.deck-panel,
.stats-panel,
.genome-panel,
.library-panel {
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    overflow-y: auto !important;
    /* Enable single main scrollbar */
    overflow-x: hidden;
    border: none !important;
    box-sizing: border-box !important;
    /* Ensure padding doesn't break height */
}

/* Handle potential wrapper div from Show component */
.deck-panel>div:not([class]) {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
}

/* Stats Panel Override */
.stats-panel {
    overflow-y: auto !important;
    padding-right: 6px;
    box-sizing: border-box;
}

/* ============================================
   MEDIA QUERIES
   ============================================ */

/* Mobile Layout Override */
@media (max-width: 768px) {
    .app-container {
        padding: 8px;
        /* Reduced padding for mobile */
        grid-template-rows: auto 1fr;
        overflow: hidden !important;
        /* Prevent page scrolling, enforce internal scrolling */
        height: 100% !important;
        min-height: 0;
    }

    .main-layout {
        display: flex;
        flex-direction: column;
        gap: 0;
        height: 100% !important;
        /* Fill container */
        overflow: hidden !important;
    }

    /* Transform the vertical divider into a horizontal toggle bar */
    .panel-divider {
        display: flex !important;
        width: 100%;
        height: 32px;
        /* Slightly taller for text */
        border-right: none;
        border-bottom: 1px solid var(--divider-border);
        padding: 0;
        align-items: center;
        background: rgba(0, 0, 0, 0.4);
        margin-bottom: 8px;
        cursor: pointer;
        transition: background 0.2s;
    }

    /* Fix "vertical highlight" glitch by removing right border/shadow on hover */
    .panel-divider:hover,
    .panel-divider:active {
        border-right: none !important;
        box-shadow: none !important;
        background: rgba(0, 0, 0, 0.6) !important;
        border-right-color: transparent !important;
    }

    .collapse-btn {
        width: 100%;
        height: 100%;
        font-size: 12px;
        background: transparent;
        transform: none;
        /* Remove rotation so text is readable */
        text-transform: uppercase;
        letter-spacing: 0.05em;
        font-weight: 600;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .collapse-btn:hover {
        background: transparent;
        color: var(--accent-color);
    }

    .desktop-icon {
        display: none;
    }

    .mobile-text {
        display: inline-block;
    }

    /* FIX: Strict 50/50 Split View on Mobile */

    /* Search Panel: Fixed 50% height when expanded */
    .search-panel {
        height: 50% !important;
        min-height: 0;
        flex: none !important;
        /* Disable flex growing/shrinking */
        overflow-y: auto !important;
        /* Scroll internal search content */
    }

    .search-panel.collapsed {
        height: 0 !important;
        display: none !important;
    }

    /* Right Panel: Takes remaining space (50% when search expanded) */
    .right-panel {
        flex: 1;
        /* DO NOT use height: auto - it breaks scrolling! */
        min-height: 0;
        /* Critical for flex child scrolling */
        overflow: hidden !important;
        /* Container doesn't scroll, children do */
        display: flex;
        flex-direction: column;
        border-radius: 0;
        border-left: none;
        border-top: 1px solid var(--glass-border);
    }

    .panel-content {
        flex: 1;
        min-height: 0;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        height: 100% !important;
    }

    /* Internal panels handle their own scrolling */
    .deck-panel,
    .stats-panel,
    .genome-panel,
    .library-content {
        flex: 1;
        height: 100% !important;
        min-height: 0;
        overflow-y: auto !important;
        overflow-x: hidden;
        box-sizing: border-box !important;
    }
}

/* Ultrawide Layout Override */
@media (min-width: 1921px) {
    .main-layout {
        max-width: none;
        margin: 0;
        border: none;
        box-shadow: none;
        /* Ensure gap handles sidebar correctly */
        gap: 24px;
        padding-right: 24px;
    }
}