/* ===================================
   MORTGAGE CALCULATOR STYLES
   Professional Design for CalcTechLab
   =================================== */

/* Use site's CSS variables - no :root definitions */

/* ===================================
   CALCULATOR CARDS & LAYOUT
   =================================== */
.calculator-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.calculator-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--brand-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* ===================================
   INFO BOXES
   =================================== */
.info-box {
    background: var(--bg-secondary);
    border-left: 4px solid var(--brand-primary);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.info-box h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-box p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}

.info-box ul {
    margin-top: 1rem;
    margin-left: 1.5rem;
}

.info-box li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

/* ===================================
   FORM ELEMENTS
   =================================== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-label-info {
    display: block;
    font-weight: 400;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--bg-card);
    color: var(--text-primary);
}

.form-input:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* Input with Icon */
.input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
    z-index: 1;
}

.input-with-icon .form-input {
    padding-left: 2.5rem;
}

/* Range Input */
.range-input {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--bg-secondary);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    margin: 1rem 0;
}

.range-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--brand-primary);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.range-input::-webkit-slider-thumb:hover {
    background: var(--brand-secondary);
    transform: scale(1.1);
}

.range-input::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--brand-primary);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    border: none;
    transition: all 0.3s ease;
}

.range-input::-moz-range-thumb:hover {
    background: var(--brand-secondary);
    transform: scale(1.1);
}

.range-value {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.range-value-current {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--brand-primary);
}

/* ===================================
   MORTGAGE TYPE TOGGLE
   =================================== */
.mortgage-type-toggle {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.type-option {
    display: block;
    position: relative;
}

.type-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.type-option-content {
    display: block;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
}

.type-option input[type="radio"]:checked + .type-option-content {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    border-color: var(--brand-primary);
    color: white;
}

.type-option input[type="radio"]:checked + .type-option-content .type-option-desc {
    color: rgba(255, 255, 255, 0.9);
}

.type-option-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.type-option-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ===================================
   BUTTONS
   =================================== */
.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    gap: 0.5rem;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    color: white;
    flex: 1;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--brand-secondary) 0%, var(--brand-primary) 100%);
}

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

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

.btn-block {
    width: 100%;
}

.btn-export {
    background: var(--brand-primary);
    color: white;
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}

.btn-export:hover {
    background: var(--brand-secondary);
}

/* ===================================
   ERROR & LOADING
   =================================== */
.error-message {
    display: none;
    background: var(--danger-bg, #fee2e2);
    border: 1px solid var(--danger, #ef4444);
    color: var(--danger, #ef4444);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    animation: slideDown 0.3s ease;
}

.error-message.show {
    display: block;
}

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

.loading {
    display: none;
    text-align: center;
    padding: 2rem;
}

.loading.show {
    display: block;
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    border: 4px solid var(--bg-secondary);
    border-top-color: var(--brand-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading p {
    color: var(--text-secondary);
    margin: 0;
}

/* ===================================
   RESULTS SECTION
   =================================== */
.results-section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.results-section.show {
    display: block;
}

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

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.result-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.result-card:hover {
    border-color: var(--brand-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.result-card.highlight {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    color: white;
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.result-card.highlight .result-label,
.result-card.highlight .result-subtext {
    color: rgba(255, 255, 255, 0.9);
}

.result-card.highlight .result-value {
    color: white;
}

.result-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--brand-primary);
    margin-bottom: 0.5rem;
    word-break: break-word;
}

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

/* ===================================
   CHARTS
   =================================== */
.chart-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.chart-tab {
    padding: 0.6rem 1.2rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.chart-tab:hover {
    background: var(--bg-tertiary);
    border-color: var(--brand-primary);
}

.chart-tab.active {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
    color: white;
}

.chart-content {
    display: none;
}

.chart-content.show {
    display: block;
}

.chart-container {
    position: relative;
    height: 400px;
    width: 100%;
}

.chart-container canvas {
    max-width: 100%;
}

/* ===================================
   ADVICE SECTION
   =================================== */
.advice-section {
    display: grid;
    gap: 1rem;
}

.advice-card {
    background: var(--bg-secondary);
    border-left: 4px solid var(--brand-primary);
    padding: 1.5rem;
    border-radius: var(--radius-md);
}

.advice-card.info {
    border-color: var(--info);
}

.advice-card.success {
    border-color: var(--success);
}

.advice-card.warning {
    border-color: var(--warning);
}

.advice-card-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.advice-card-content {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===================================
   EXPORT SECTION
   =================================== */
.export-section {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

/* ===================================
   SCHEDULE TABLE
   =================================== */
.schedule-table-container {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.schedule-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
}

.schedule-table thead {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    color: white;
}

.schedule-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.schedule-table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.schedule-table tbody tr {
    transition: background-color 0.2s ease;
}

.schedule-table tbody tr:hover {
    background-color: var(--bg-secondary);
}

.schedule-table tbody tr:last-child td {
    border-bottom: none;
}

/* ===================================
   FORM GRID
   =================================== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    .calculator-card {
        padding: 1.5rem;
    }
    
    .card-title {
        font-size: 1.3rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    .mortgage-type-toggle {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 300px;
    }
    
    .export-section {
        flex-direction: column;
    }
    
    .result-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .calculator-card {
        padding: 1rem;
    }
    
    .card-title {
        font-size: 1.1rem;
    }
    
    .form-input {
        font-size: 0.9rem;
        padding: 0.6rem 0.8rem;
    }
    
    .btn {
        font-size: 0.9rem;
        padding: 0.6rem 1rem;
    }
}

/* ===================================
   PRINT STYLES
   =================================== */
@media print {
    .calculator-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .button-group,
    .export-section,
    .chart-tabs {
        display: none;
    }
    
    .results-section {
        display: block !important;
    }
}