/* ============================================================
   PrimGeo - Zeichenfläche Styles
   Geometrie-App für Grundschulkinder (6–10 Jahre)
   ============================================================ */

/* ---------- CSS-Variablen ---------- */
:root {
    --color-primary: #2196F3;
    --color-primary-light: #BBDEFB;
    --color-primary-dark: #1565C0;
    --color-secondary: #4CAF50;
    --color-secondary-light: #C8E6C9;
    --color-accent: #FF9800;
    --color-accent-light: #FFE0B2;
    --color-background: #F5F5F5;
    --color-surface: #FFFFFF;
    --color-toolbar: #37474F;
    --color-toolbar-text: #ECEFF1;
    --color-statusbar: #263238;
    --color-statusbar-text: #B0BEC5;
    --color-text: #212121;
    --color-text-secondary: #757575;
    --color-border: #E0E0E0;
    --color-danger: #F44336;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 3px 8px rgba(0, 0, 0, 0.18);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.22);
    --transition: 0.2s ease;
}

/* ---------- Reset & Grundlagen ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-background);
}

/* ---------- CSS-Grid Layout ---------- */
body {
    display: grid;
    grid-template-areas:
        "toolbar   toolbar   toolbar"
        "toolPanel canvas    properties"
        "status    status    status";
    grid-template-rows: 50px 1fr 30px;
    grid-template-columns: 80px 1fr 220px;
}

/* ---------- Top Toolbar ---------- */
#toolbar {
    grid-area: toolbar;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-toolbar);
    color: var(--color-toolbar-text);
    padding: 0 16px;
    gap: 12px;
    z-index: 10;
    box-shadow: var(--shadow-sm);
}

.toolbar-left {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.app-name {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.toolbar-center {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    justify-content: center;
    min-width: 0;
}

#userDisplay {
    font-size: 13px;
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

#projectName {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-toolbar-text);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    padding: 5px 10px;
    width: 200px;
    text-align: center;
    transition: border var(--transition), background var(--transition);
}

#projectName:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.15);
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.toolbar-btn {
    font-size: 13px;
    color: var(--color-toolbar-text);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.toolbar-btn:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.toolbar-btn:active {
    transform: translateY(0);
}

/* ---------- Left Tool Panel ---------- */
#toolPanel {
    grid-area: toolPanel;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    padding: 8px 4px;
    gap: 4px;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 5;
}

.tool-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: var(--color-background);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    flex-shrink: 0;
}

.tool-btn:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-sm);
}

.tool-btn:active {
    transform: scale(0.97);
}

.tool-btn.active {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    box-shadow: inset 0 0 0 1px var(--color-primary), var(--shadow-sm);
}

.tool-emoji {
    font-size: 26px;
    line-height: 1.2;
}

.tool-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-top: 2px;
    text-align: center;
    line-height: 1.1;
}

.tool-btn.active .tool-label {
    color: var(--color-primary-dark);
}

.tool-separator {
    width: 50px;
    height: 2px;
    background: var(--color-border);
    border-radius: 1px;
    margin: 6px 0;
    flex-shrink: 0;
}

/* ---------- Canvas Area ---------- */
#canvasContainer {
    grid-area: canvas;
    position: relative;
    overflow: hidden;
    background: #FAFAFA;
}

#geoCanvas {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
}

/* ---------- Right Properties Panel ---------- */
#propertiesPanel {
    grid-area: properties;
    background: var(--color-surface);
    border-left: 1px solid var(--color-border);
    padding: 12px;
    overflow-y: auto;
    z-index: 5;
}

.panel-section {
    margin-bottom: 14px;
}

.panel-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.hint-text {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.prop-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

/* Farbwähler */
.color-picker {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 36px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 2px;
    background: var(--color-surface);
    transition: border-color var(--transition);
}

.color-picker:hover {
    border-color: var(--color-primary);
}

.color-picker::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.color-picker::-webkit-color-swatch {
    border: none;
    border-radius: 3px;
}

/* Schieberegler */
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: var(--color-primary-light);
    border-radius: 4px;
    outline: none;
    transition: background var(--transition);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    background: var(--color-primary);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid var(--color-surface);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), background var(--transition);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    background: var(--color-primary-dark);
}

.slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    background: var(--color-primary);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid var(--color-surface);
    box-shadow: var(--shadow-sm);
}

/* Kontrollkästchen */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    cursor: pointer;
    padding: 4px 0;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.panel-separator {
    height: 1px;
    background: var(--color-border);
    margin: 14px 0;
}

/* Objektliste */
#objectList {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 260px;
    overflow-y: auto;
}

.object-item {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 0;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
    overflow: hidden;
}

.object-item-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
}

.object-item:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

.object-item.selected {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    font-weight: 600;
}

.object-item.expanded {
    border-color: var(--color-primary);
}

.object-item-emoji {
    font-size: 16px;
    flex-shrink: 0;
}

.object-item-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.object-item-expand {
    font-size: 10px;
    color: #999;
    flex-shrink: 0;
    padding: 0 2px;
}

.object-item-details {
    padding: 4px 10px 8px;
    border-top: 1px solid var(--color-border);
    background: #fff;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    line-height: 1.4;
}

.detail-label {
    color: #757575;
    flex-shrink: 0;
    margin-right: 6px;
}

.detail-value {
    font-weight: 600;
    text-align: right;
    word-break: break-all;
    color: #333;
}

/* ---------- Bottom Status Bar ---------- */
#statusBar {
    grid-area: status;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-statusbar);
    color: var(--color-statusbar-text);
    padding: 0 16px;
    font-size: 12px;
    z-index: 10;
    gap: 16px;
}

#statusBar span {
    white-space: nowrap;
}

/* ---------- Modal (Projektübersicht) ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal-overlay[hidden] {
    display: none;
}

.modal-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    width: 480px;
    max-width: 92vw;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.25s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 700;
}

.modal-close {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.modal-close:hover {
    background: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
}

.modal-body {
    padding: 16px 20px;
    overflow-y: auto;
    flex: 1;
}

/* Projektliste im Modal */
#projectList {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.project-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.project-card:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.project-card-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.project-card-info {
    flex: 1;
    min-width: 0;
}

.project-card-name {
    font-size: 14px;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.project-card-date {
    font-size: 11px;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

/* ---------- Eingabefelder im Eigenschaften-Panel ---------- */
#propertiesPanel input[type="text"],
#propertiesPanel input[type="number"] {
    width: 100%;
    padding: 6px 8px;
    font-size: 13px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-background);
    transition: border-color var(--transition);
}

#propertiesPanel input[type="text"]:focus,
#propertiesPanel input[type="number"]:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* ---------- Scrollbar-Styling ---------- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-secondary);
}

/* ---------- Responsive: kleine Bildschirme ---------- */
@media (max-width: 768px) {
    body {
        grid-template-areas:
            "toolbar   toolbar"
            "toolPanel canvas"
            "status    status";
        grid-template-columns: 64px 1fr;
    }

    #propertiesPanel {
        display: none;
    }

    .tool-btn {
        width: 56px;
        height: 56px;
    }

    .tool-emoji {
        font-size: 22px;
    }

    .tool-label {
        font-size: 9px;
    }

    .toolbar-btn {
        font-size: 12px;
        padding: 5px 8px;
    }

    #projectName {
        width: 120px;
        font-size: 12px;
    }
}

@media (max-width: 520px) {
    .toolbar-center {
        display: none;
    }

    .toolbar-btn {
        padding: 5px 6px;
        font-size: 11px;
    }
}