/* Simplified Neobrutalist Design System - Inspired by lazyjobseeker.ekio.ch */

:root {
    --bg-app: #FAF8F5;
    /* Warm beige background */
    --bg-sidebar: #FFFFFF;
    /* Sidebar white */
    --bg-card: #FFFFFF;
    --bg-card-hover: #FAF8F5;
    --bg-toolbar: #FFFFFF;
    --border-color: #121212;
    /* Solid black */
    --text-primary: #121212;
    --text-secondary: #5A5A5A;

    --sidebar-width: 320px;
    --header-height: 60px;
    --thumbnails-height: 130px;
    --transition-speed: 0.15s;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Space Mono', Courier, monospace;
    background-color: var(--bg-app);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

/* Custom Brutalist Scrollbars */
::-webkit-scrollbar {
    width: 12px;
    height: 14px;
    /* Thicker for easier horizontal scrolling */
}

::-webkit-scrollbar-track {
    background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    /* Solid black block for maximum contrast */
    border: 2px solid var(--bg-app);
    /* Inset border effect */
}

::-webkit-scrollbar-thumb:hover {
    background: #5A5A5A;
}

/* App Column Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
}

/* Unified Top Bar (Header) */
.top-bar {
    height: var(--header-height);
    background-color: var(--bg-sidebar);
    border-bottom: 2px solid var(--border-color);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 10;
    flex-shrink: 0;
}

.brand {
    font-family: 'Space Mono', Courier, monospace;
    font-size: 2.2rem;
    font-weight: 700;
    text-transform: uppercase;
    height: 100%;
    display: flex;
    align-items: center;
}

.logo {
    height: 100%;
    display: flex;
    align-items: center;
}

.logo-img {
    height: 28px;
    width: auto;
    display: block;
}

.manual-title-area {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    padding-left: 24px;
    overflow: hidden;
}

.manual-title-area h1 {
    font-size: 0.9rem;
    font-weight: 700;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    text-transform: uppercase;
}

.badge {
    background-color: var(--bg-app);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.65rem;
    padding: 3px 6px;
    font-weight: 700;
}

.top-bar-controls {
    display: flex;
    gap: 8px;
    padding-left: 12px;
}

.control-btn {
    background-color: var(--bg-sidebar);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 0px;
    padding: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed);
    text-decoration: none;
}

.control-btn:hover {
    background-color: var(--bg-card-hover);
}

/* App Main Body Layout */
.app-body {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
    width: 100%;
}

/* Sidebar styling */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    height: 100%;
}

/* Manual List (Clean bordered items list) */
.manual-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* Manual Item Cards - Simplified as clean rows */
.manual-item {
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid #E2E2D8;
    padding: 18px 20px;
    cursor: pointer;
    transition: background-color 0.1s, color 0.1s;
}

.manual-item:hover {
    background-color: var(--bg-card-hover);
}

.manual-item.active {
    background-color: var(--border-color);
    color: var(--bg-sidebar);
}

.manual-item.active .manual-item-meta {
    color: var(--bg-sidebar);
}

.manual-item-title {
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 6px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    text-transform: uppercase;
}

.manual-item-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.65rem;
    color: var(--text-secondary);
}

/* Loader */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-primary);
    padding: 40px 0;
    font-size: 0.8rem;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--bg-app);
    border-top: 2px solid var(--border-color);
    animation: spin 0.8s linear infinite;
}

/* Main Viewer Area */
.main-viewer {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
}

/* Viewer Container Panel */
.viewer-container {
    flex: 1;
    position: relative;
    background-color: var(--bg-app);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Welcome Box Empty State */
.empty-viewer-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    width: 100%;
    height: 100%;
}

.welcome-box {
    max-width: 480px;
    background-color: var(--bg-sidebar);
    padding: 30px;
    border-radius: 0px;
    box-shadow: 0px 4px 20px rgba(0, 0, 0, 0.05);
}

.welcome-box h2 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    text-transform: uppercase;
}

.welcome-box p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 24px;
    line-height: 1.6;
}

.shortcuts-list {
    border-top: 2px dashed var(--border-color);
    padding-top: 20px;
    display: inline-flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    align-items: center;
}

.shortcut-item {
    display: flex;
    align-items: center;
    width: 280px;
    gap: 16px;
    text-align: left;
}

.shortcut-sym {
    font-size: 0.8rem;
    min-width: 60px;
    text-align: center;
    color: var(--text-primary);
}

.shortcut-lbl {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* Canvas Viewport */
.canvas-viewport {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
}

.canvas-viewport:active {
    cursor: grabbing;
}

.pan-zoom-container {
    display: flex;
    align-items: center;
    justify-content: center;
    transform-origin: center center;
    will-change: transform;
}

#page-image {
    max-width: 90%;
    max-height: 90%;
    border-radius: 0px;
    background-color: #FFFFFF;
    user-select: none;
    -webkit-user-drag: none;
    box-shadow: 0px 4px 20px rgba(0, 0, 0, 0.08);
}

/* Navigation Arrow Overlays */
.nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--bg-sidebar);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    width: 48px;
    height: 48px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed), visibility var(--transition-speed), background-color var(--transition-speed);
    z-index: 5;
}

.canvas-viewport:hover .nav-arrow {
    opacity: 0.9;
    visibility: visible;
}

.nav-arrow:hover {
    background-color: var(--bg-card-hover);
}

.nav-arrow.prev {
    left: 20px;
}

.nav-arrow.next {
    right: 20px;
}

/* Floating Toolbar */
.floating-toolbar {
    position: relative;
    background-color: var(--bg-toolbar);
    border-top: 2px solid var(--border-color);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    z-index: 6;
    flex-shrink: 0;
    transition: max-height var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1), opacity var(--transition-speed), padding var(--transition-speed);
    overflow: hidden;
    max-height: 60px;
    opacity: 1;
}

.floating-toolbar.collapsed {
    max-height: 0;
    opacity: 0;
    padding: 0;
    border-top-width: 0;
}

.tool-btn {
    background: transparent;
    border: 2px solid transparent;
    color: var(--text-primary);
    border-radius: 0px;
    padding: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.1s, border-color 0.1s;
}

.tool-btn:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color);
}

.toolbar-divider {
    width: 2px;
    height: 20px;
    background-color: var(--border-color);
    margin: 0 4px;
}

.page-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 700;
}

.page-indicator input {
    background-color: var(--bg-app);
    border: 2px solid var(--border-color);
    border-radius: 0px;
    color: var(--text-primary);
    width: 44px;
    padding: 4px;
    text-align: center;
    font-family: inherit;
    font-weight: 700;
    outline: none;
    -webkit-appearance: textfield;
    appearance: textfield;
}

.page-indicator input::-webkit-outer-spin-button,
.page-indicator input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.zoom-value-btn {
    background: transparent;
    border: 2px solid transparent;
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 6px;
    min-width: 52px;
    text-align: center;
    cursor: pointer;
    border-radius: 0px;
    transition: background-color 0.1s, border-color 0.1s;
}

.zoom-value-btn:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-color);
}

/* Bottom Thumbnails Strip */
.thumbnails-strip {
    height: var(--thumbnails-height);
    background-color: var(--bg-sidebar);
    border-top: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 15px 20px;
    z-index: 8;
    flex-shrink: 0;
    transition: height var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}

.thumbnails-strip.collapsed {
    height: 0;
    padding: 0;
    border-top-width: 0;
}

.thumbnails-container {
    display: flex;
    gap: 12px;
    height: 100%;
}

/* Thumbnail Item Cards */
.thumbnail-card {
    height: 100%;
    aspect-ratio: 4/3;
    background-color: var(--bg-sidebar);
    border: 2px solid #E2E2D8;
    border-radius: 0px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: background-color 0.15s, border-color 0.15s;
    user-select: none;
}

.thumbnail-card:hover {
    background-color: var(--bg-card-hover);
}

.thumbnail-card.active {
    border-color: var(--border-color);
    background-color: var(--border-color);
}

.thumbnail-card img {
    height: 100%;
    width: 100%;
    object-fit: contain;
    background-color: white;
}

.thumbnail-card .page-number {
    position: absolute;
    bottom: 0px;
    right: 0px;
    background-color: #E2E2D8;
    color: var(--text-primary);
    font-size: 0.65rem;
    padding: 2px 5px;
    font-weight: 700;
}

.thumbnail-card.active .page-number {
    background-color: var(--border-color);
    color: var(--bg-sidebar);
}

/* Helper hidden class */
.hidden {
    display: none !important;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .app-body {
        flex-direction: column;
        overflow-y: auto;
    }

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 2px solid var(--border-color);
        height: 200px;
    }

    .main-viewer {
        height: calc(100vh - var(--header-height) - 200px);
    }

    .top-bar {
        padding: 0 16px;
        height: auto;
        min-height: var(--header-height);
        padding-top: 10px;
        padding-bottom: 10px;
        gap: 10px;
    }

    .logo {
        border-right: none;
        padding-right: 0;
        height: auto;
    }

    .manual-title-area {
        padding-left: 0;
        border-left: none;
        width: 100%;
        flex-basis: 100%;
    }

    .nav-arrow {
        width: 40px;
        height: 40px;
    }

    .nav-arrow.prev {
        left: 10px;
    }

    .nav-arrow.next {
        right: 10px;
    }

    .floating-toolbar {
        padding: 6px 8px;
        max-width: 100%;
        overflow-x: auto;
        justify-content: flex-start;
    }
}