/* ========================================
   24 Point Calculator - Custom Styles
   ======================================== */

.number-inputs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.input-group input[type="number"] {
    width: 100%;
    padding: 14px 16px;
    font-size: 20px;
    font-weight: 600;
    text-align: center;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    color: var(--text-primary);
    transition: var(--transition-fast);
    outline: none;
}

.input-group input[type="number"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(45, 140, 240, 0.1);
}

.input-group input[type="number"]:hover {
    border-color: #c0c4cc;
}

.input-group input[type="number"]::-webkit-inner-spin-button,
.input-group input[type="number"]::-webkit-outer-spin-button {
    opacity: 1;
}

.action-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    background-color: var(--bg-light);
    color: var(--text-primary);
    border-color: #c0c4cc;
}

.output-section {
    min-height: 200px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    display: block;
}

.empty-state p {
    font-size: 16px;
    margin: 0;
}

.no-solution {
    text-align: center;
    padding: 40px 20px;
    color: var(--warning-color);
    background: rgba(250, 173, 20, 0.05);
    border: 1px solid rgba(250, 173, 20, 0.2);
    border-radius: var(--radius-md);
}

.no-solution i {
    font-size: 2.5rem;
    margin-bottom: 12px;
    display: block;
}

.no-solution h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--warning-color);
}

.no-solution p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

.solutions-header {
    margin-bottom: 16px;
}

.solution-count {
    display: inline-block;
    padding: 8px 16px;
    background: var(--success-color);
    color: white;
    font-size: 14px;
    font-weight: 500;
    border-radius: 20px;
}

.solution-count strong {
    font-size: 18px;
    margin: 0 4px;
}

.solutions-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.solution-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-light);
    border-left: 4px solid var(--success-color);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    animation: fadeInUp 0.3s ease-out;
    gap: 12px;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.formula {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
    flex: 1;
}

.solution-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.solution-badge {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-white);
    padding: 4px 10px;
    border-radius: 12px;
    white-space: nowrap;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 14px;
}

.share-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.1);
}

.share-btn i {
    margin: 0;
}

.solution-note {
    text-align: center;
    padding: 12px;
    font-size: 14px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    margin-top: 8px;
}

@media (max-width: 768px) {
    .number-inputs {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .input-group input[type="number"] {
        padding: 12px 14px;
        font-size: 18px;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons button {
        width: 100%;
    }

    .solutions-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .formula {
        font-size: 13px;
    }

    .solution-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding: 10px 12px;
    }

    .solution-actions {
        width: 100%;
        justify-content: space-between;
    }

    .solution-badge {
        align-self: flex-end;
    }

    .empty-state {
        padding: 40px 20px;
    }

    .no-solution {
        padding: 30px 16px;
    }
}

@media (max-width: 480px) {
    .number-inputs {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .input-group input[type="number"] {
        font-size: 16px;
        padding: 10px 12px;
    }

    .solutions-container {
        grid-template-columns: 1fr;
    }

    .calc-result {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .result-value {
        font-size: 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: 0.65rem 1.2rem;
        font-size: 0.9rem;
    }

    .formula {
        font-size: 12px;
    }

    .info-card h2 {
        font-size: 1.25rem;
    }

    .scenario-grid {
        grid-template-columns: 1fr;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }
}

[data-theme="dark"] .input-group input[type="number"] {
    background: var(--bg-dark);
    border-color: #555;
    color: var(--text-light);
}

[data-theme="dark"] .input-group input[type="number"]:focus {
    border-color: var(--primary-hover);
    box-shadow: 0 0 0 3px rgba(24, 144, 255, 0.2);
}

[data-theme="dark"] .solution-card {
    background: var(--bg-dark-alt);
}

[data-theme="dark"] .solution-card:hover {
    background: rgba(45, 140, 240, 0.1);
}

[data-theme="dark"] .solution-badge {
    background: var(--bg-dark);
    color: var(--text-light-muted);
}