/* Scientific Calculator Light Theme */

/* Calculator Layout */

/* Dark mode overrides */
[data-theme="dark"] {
    --tool-bg: #0f172a;
    --tool-border: #334155;
    --tool-border-hover: #475569;
    --tool-text: #f8fafc;
    --tool-text-secondary: #94a3b8;
    --tool-input-bg: #1e293b;
    --tool-input-border: #334155;
    --tool-button-bg: #1e293b;
    --tool-button-hover: #334155;
    --tool-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
    --tool-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --background-color: #0f172a;
    --text-color: #f8fafc;
    --status-info: rgba(96, 165, 250, 0.2);
    --status-success: rgba(34, 197, 94, 0.2);
    --status-error: rgba(248, 113, 113, 0.2);
    --bg-color: #0f172a;
}

/* Dark mode element overrides */
[data-theme="dark"] .tool-card {
    background: var(--bg-card, #1e293b);
    border-color: var(--border-color, #334155);
}

[data-theme="dark"] .tool-hero {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: var(--input-bg, #1e293b);
    color: var(--text-primary, #f8fafc);
    border-color: var(--border-color, #334155);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: var(--text-muted, #64748b);
}

[data-theme="dark"] .tab-btn.active {
    color: white;
}

[data-theme="dark"] label {
    color: var(--text-primary, #f8fafc);
}

[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3,
[data-theme="dark"] h4, [data-theme="dark"] h5, [data-theme="dark"] h6 {
    color: var(--text-primary, #f8fafc);
}

[data-theme="dark"] p {
    color: var(--text-secondary, #cbd5e1);
}

/* Dark mode calculator buttons */
[data-theme="dark"] .calc-btn {
    background: var(--bg-surface, #1e293b);
    border-color: var(--border-color, #334155);
    color: var(--text-primary, #f8fafc);
}

[data-theme="dark"] .calc-btn:hover {
    background: var(--bg-tertiary, #334155);
    border-color: var(--border-color, #475569);
}

[data-theme="dark"] .number-btn {
    background: var(--bg-card, #0f172a);
    border-color: var(--border-color, #334155);
}

[data-theme="dark"] .number-btn:hover {
    background: var(--bg-surface, #1e293b);
}

[data-theme="dark"] .calculator-card {
    background: var(--bg-card, #1e293b);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .display {
    background: var(--bg-body, #0f172a);
    border-color: var(--border-color, #334155);
}

[data-theme="dark"] .result-display {
    color: var(--text-primary, #f8fafc);
}

[data-theme="dark"] .history-display {
    color: var(--text-muted, #94a3b8);
}

.tool-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
    margin: 2rem 0;
}

.tool-main {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Calculator Container */
.calculator {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
}

/* Display */
.calculator-display {
    background: var(--bg-secondary);
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 2px solid var(--border-color);
    position: relative;
    min-height: 100px;
}

.display-secondary {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    min-height: 1.2rem;
    text-align: right;
}

.display-main {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: right;
    font-family: 'Monaco', 'Menlo', monospace;
    word-break: break-all;
    line-height: 1.2;
    animation: displayUpdate 0.3s ease;
}

.display-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.angle-mode {
    background: var(--color-blue-soft);
    color: var(--primary-color);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-weight: 500;
}

.memory-indicator {
    background: var(--bg-primary)3cd;
    color: var(--warning-color);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-weight: 500;
    min-width: 20px;
    text-align: center;
}

/* Controls */
.calculator-controls {
    margin-bottom: 1rem;
}

.control-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.control-btn {
    background: #6c757d;
    color: var(--bg-primary);
    border: none;
    border-radius: 12px;
    padding: 0.75rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 45px;
}

.control-btn:hover {
    background: #5a6268;
    transform: translateY(-1px);
}

/* Calculator Grid */
.calculator-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.75rem;
}

.calc-btn {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 55px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calc-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    transform: translateY(-1px);
}

.calc-btn:active {
    transform: scale(0.95);
}

/* Button Types */
.number-btn {
    background: var(--bg-primary);
    border-color: var(--border-color);
    font-size: 1.1rem;
    font-weight: 600;
}

.number-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

.operator-btn {
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: var(--bg-primary);
    border-color: #0056b3;
    font-size: 1.2rem;
}

.operator-btn:hover {
    background: linear-gradient(135deg, #0056b3, #004085);
    transform: translateY(-2px);
}

.equals-btn {
    background: linear-gradient(135deg, #28a745, #1e7e34);
    color: var(--bg-primary);
    border-color: #1e7e34;
    font-size: 1.3rem;
    grid-row: span 2;
}

.equals-btn:hover {
    background: linear-gradient(135deg, #1e7e34, #155724);
    transform: translateY(-2px);
}

.function-btn {
    background: linear-gradient(135deg, #6f42c1, #563d7c);
    color: var(--bg-primary);
    border-color: #563d7c;
    font-size: 0.85rem;
}

.function-btn:hover {
    background: linear-gradient(135deg, #563d7c, #452c63);
    transform: translateY(-2px);
}

.trig-btn {
    background: linear-gradient(135deg, #fd7e14, #e55d00);
    color: var(--bg-primary);
    border-color: #e55d00;
    font-size: 0.85rem;
}

.trig-btn:hover {
    background: linear-gradient(135deg, #e55d00, #cc5200);
    transform: translateY(-2px);
}

.memory-btn {
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: var(--bg-primary);
    border-color: #c82333;
    font-size: 0.8rem;
}

.memory-btn:hover {
    background: linear-gradient(135deg, #c82333, #a71e2a);
    transform: translateY(-2px);
}

/* History Panel */
.history-panel {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    max-height: 400px;
    display: flex;
    flex-direction: column;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #dee2e6;
}

.history-header h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin: 0;
}

.clear-history-btn {
    background: #dc3545;
    color: var(--bg-primary);
    border: none;
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.clear-history-btn:hover {
    background: #c82333;
    transform: translateY(-1px);
}

.history-list {
    flex: 1;
    overflow-y: auto;
}

.history-list::-webkit-scrollbar {
    width: 6px;
}

.history-list::-webkit-scrollbar-track {
    background: transparent;
}

.history-list::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.history-empty {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: 2rem;
}

.history-item {
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.history-item:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    transform: translateX(3px);
}

.history-expression {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    word-break: break-all;
}

.history-time {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

/* Information Panel */
.tool-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.info-card h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin: 0 0 1rem 0;
    font-weight: 600;
}

.info-card h4 {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin: 1rem 0 0.5rem 0;
    font-weight: 600;
}

/* Function Guide */
.function-group {
    margin-bottom: 1.5rem;
}

.function-group:last-child {
    margin-bottom: 0;
}

.function-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.function-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f1f3f4;
}

.function-item:last-child {
    border-bottom: none;
}

.function-key {
    font-family: 'Monaco', 'Menlo', monospace;
    background: var(--color-blue-soft);
    color: var(--primary-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.function-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: right;
    flex: 1;
    margin-left: 1rem;
}

/* Shortcuts and Constants */
.shortcut-list,
.constants-list,
.angle-modes {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.shortcut-item,
.constant-item,
.mode-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f1f3f4;
}

.shortcut-item:last-child,
.constant-item:last-child,
.mode-item:last-child {
    border-bottom: none;
}

.shortcut-key {
    font-family: 'Monaco', 'Menlo', monospace;
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    border: 1px solid var(--border-color);
}

.shortcut-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.constant-symbol {
    font-family: 'Times New Roman', serif;
    font-size: 1.2rem;
    font-weight: bold;
    color: #6f42c1;
}

.constant-value {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.8rem;
    color: var(--text-primary);
}

.constant-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.mode-name {
    font-family: 'Monaco', 'Menlo', monospace;
    background: var(--color-blue-soft);
    color: var(--primary-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.mode-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    flex: 1;
    margin-left: 1rem;
}

/* Animations */
@keyframes displayUpdate {
    0% {
        opacity: 0.7;
        transform: scale(0.98);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .tool-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .tool-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .calculator {
        padding: 1.5rem;
    }
    
    .calculator-display {
        padding: 1rem;
        min-height: 80px;
    }
    
    .display-main {
        font-size: 2rem;
    }
    
    .calculator-grid {
        gap: 0.5rem;
    }
    
    .calc-btn {
        min-height: 50px;
        padding: 0.75rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .control-btn {
        min-height: 40px;
        padding: 0.5rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .calculator-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .calc-btn {
        min-height: 45px;
        font-size: 0.75rem;
    }
    
    .display-main {
        font-size: 1.8rem;
    }
    
    .history-panel {
        max-height: 300px;
    }
}