/* style.css - Finanzmathematischer Taschenrechner für Anleihen */

:root {
    --calculator-bg: #f0f0f0;
    --calculator-border: #d0d0d0;
    --calculator-display-bg: #e8f4f8;
    --calculator-display-border: #c0d0d8;
    --calculator-btn-bg: #ffffff;
    --calculator-btn-border: #d0d0d0;
    --calculator-btn-hover: #f8f8f8;
    --calculator-btn-active: #e0e0e0;
    --calculator-number-btn-bg: #ffffff;
    --calculator-operator-btn-bg: #f0f8ff;
    --calculator-function-btn-bg: #fff0f0;
    --calculator-special-btn-bg: #e6f7e6;
    --calculator-mode-btn-bg: #f0f0f0;
    --calculator-mode-btn-active: #d8e8f8;
    --visualization-bg: #ffffff;
    --visualization-border: #e0e0e0;
    --chart-tab-bg: #f8f8f8;
    --chart-tab-active: #ffffff;
    --result-item-bg: #f8f8f8;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
    padding: 20px 0;
}

/* Taschenrechner-Container */
.calculator-container {
    background-color: var(--calculator-bg);
    border: 1px solid var(--calculator-border);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 15px;
    margin-bottom: 20px;
    max-width: 100%;
}

/* Taschenrechner-Header */
.calculator-header {
    margin-bottom: 15px;
    text-align: center;
}

.calculator-header h2 {
    margin: 0 0 10px;
    font-size: 1.5rem;
    font-weight: 600;
}

/* Modus-Auswahl */
.mode-selector {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    border-radius: 5px;
    overflow: hidden;
}

.mode-btn {
    flex: 1;
    background-color: var(--calculator-mode-btn-bg);
    border: 1px solid var(--calculator-border);
    padding: 8px 5px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.mode-btn:not(:last-child) {
    border-right: none;
}

.mode-btn.active {
    background-color: var(--calculator-mode-btn-active);
    font-weight: bold;
}

/* Taschenrechner-Display */
.calculator-display {
    background-color: var(--calculator-display-bg);
    border: 1px solid var(--calculator-display-border);
    border-radius: 5px;
    padding: 10px;
    margin-bottom: 15px;
    text-align: right;
    min-height: 80px;
}

.display-result {
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.display-formula {
    font-size: 0.9rem;
    color: #666;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Eingabefelder */
.calculator-inputs {
    margin-bottom: 15px;
}

.input-group {
    margin-bottom: 10px;
    display: flex;
    flex-direction: column;
}

.input-group label {
    font-size: 0.9rem;
    margin-bottom: 3px;
    font-weight: 500;
}

.input-group input,
.input-group select {
    padding: 8px;
    border: 1px solid var(--calculator-border);
    border-radius: 4px;
    font-size: 0.95rem;
}

/* Taschenrechner-Tastatur */
.calculator-keypad {
    display: grid;
    grid-gap: 8px;
}

.keypad-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 8px;
}

.calc-btn {
    background-color: var(--calculator-btn-bg);
    border: 1px solid var(--calculator-btn-border);
    border-radius: 5px;
    padding: 12px 0;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.calc-btn:hover {
    background-color: var(--calculator-btn-hover);
}

.calc-btn:active {
    background-color: var(--calculator-btn-active);
    transform: translateY(1px);
}

.number-btn {
    background-color: var(--calculator-number-btn-bg);
}

.operator-btn {
    background-color: var(--calculator-operator-btn-bg);
    font-weight: bold;
}

.function-btn {
    background-color: var(--calculator-function-btn-bg);
}

.special-btn {
    background-color: var(--calculator-special-btn-bg);
    font-weight: bold;
}

/* Visualisierungs-Container */
.visualization-container {
    background-color: var(--visualization-bg);
    border: 1px solid var(--visualization-border);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 15px;
}

/* Ergebnis-Panel */
.results-panel {
    margin-bottom: 20px;
}

.results-panel h3 {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.3rem;
    font-weight: 600;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    grid-gap: 15px;
}

.result-item {
    background-color: var(--result-item-bg);
    border-radius: 5px;
    padding: 10px;
    text-align: center;
}

.result-label {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 5px;
}

.result-value {
    font-size: 1.2rem;
    font-weight: bold;
}

/* Chart-Container */
.chart-container {
    margin-bottom: 20px;
}

.chart-tabs {
    display: flex;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--visualization-border);
}

.chart-tab {
    background-color: var(--chart-tab-bg);
    border: 1px solid var(--visualization-border);
    border-bottom: none;
    border-radius: 5px 5px 0 0;
    padding: 8px 15px;
    margin-right: 5px;
    cursor: pointer;
    font-size: 0.9rem;
}

.chart-tab.active {
    background-color: var(--chart-tab-active);
    border-bottom-color: var(--chart-tab-active);
    font-weight: bold;
}

.chart-panel {
    height: 300px;
    position: relative;
}

/* Tabellen-Container */
.data-table-container {
    margin-top: 20px;
}

.data-table-container h4 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.1rem;
    font-weight: 600;
}

.table {
    font-size: 0.9rem;
}

.export-buttons {
    margin-top: 10px;
    text-align: right;
}

.export-buttons button {
    margin-left: 10px;
}

/* Responsive Anpassungen */
@media (max-width: 991px) {
    .calculator-container,
    .visualization-container {
        margin-bottom: 20px;
    }
    
    .calculator-keypad {
        grid-gap: 5px;
    }
    
    .calc-btn {
        padding: 10px 0;
        font-size: 1.1rem;
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .mode-btn {
        padding: 6px 3px;
        font-size: 0.8rem;
    }
    
    .display-result {
        font-size: 1.5rem;
    }
    
    .chart-panel {
        height: 250px;
    }
}

@media (max-width: 575px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-tab {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
}