/**
 * Skillify Calculators - Calculator Specific Styles
 * 
 * @package Skillify_Calculators
 */

/* ============================================
   CALCULATOR DISPLAY
   ============================================ */

.calculator-display-wrapper {
    margin-bottom: var(--spacing-xl);
}

.calculator-display {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: right;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

.display-previous {
    color: var(--text-secondary);
    font-size: 1rem;
    min-height: 1.5rem;
}

.display-current {
    color: var(--text-primary);
    font-size: 2.5rem;
    font-weight: 700;
    word-break: break-all;
    font-family: var(--font-mono);
}

/* ============================================
   CALCULATOR KEYPAD
   ============================================ */

.calculator-keypad {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.calc-btn {
    padding: var(--spacing-lg);
    font-size: 1.25rem;
    font-weight: 600;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 60px;
}

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

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

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

.btn-operator {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border-color: var(--primary-color);
}

.btn-function {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 1rem;
}

.btn-equals {
    background: linear-gradient(135deg, var(--accent-color), #059669);
    color: white;
    border-color: var(--accent-color);
    grid-column: span 2;
}

.btn-zero {
    grid-column: span 2;
}

/* ============================================
   SCIENTIFIC CALCULATOR
   ============================================ */

.scientific-calculator .calculator-keypad {
    grid-template-columns: repeat(5, 1fr);
}

.scientific-mode-toggle {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.scientific-mode-toggle label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: 600;
}

.scientific-mode-toggle input[type="checkbox"] {
    width: 40px;
    height: 20px;
    cursor: pointer;
}

/* ============================================
   CALCULATOR TABS
   ============================================ */

.calculator-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    overflow-x: auto;
    border-bottom: 2px solid var(--border-color);
}

.calc-tab {
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.calc-tab:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
}

.calc-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.calc-tab-content {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.calc-tab-content.active {
    display: block;
}

/* ============================================
   FORM STYLES
   ============================================ */

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.form-suffix {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-weight: 600;
    pointer-events: none;
}

.form-group {
    position: relative;
}

.form-group input[type="number"],
.form-group input[type="date"],
.form-group select {
    width: 100%;
}

.form-group input:has(+ .form-suffix) {
    padding-right: 50px;
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.input-group input {
    flex: 1;
}

/* ============================================
   UNIT TOGGLE
   ============================================ */

.unit-toggle {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    justify-content: center;
}

.unit-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.unit-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* ============================================
   BMI CALCULATOR SPECIFIC
   ============================================ */

.bmi-gauge {
    margin: var(--spacing-xl) 0;
}

.bmi-gauge-bar {
    height: 40px;
    background: linear-gradient(to right, 
        #3b82f6 0%, 
        #3b82f6 25%, 
        #10b981 25%, 
        #10b981 50%, 
        #f59e0b 50%, 
        #f59e0b 75%, 
        #ef4444 75%, 
        #ef4444 100%
    );
    border-radius: var(--radius-md);
    position: relative;
    margin-bottom: var(--spacing-md);
}

.bmi-pointer {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 15px solid var(--text-primary);
    transition: left var(--transition-slow);
}

.bmi-categories {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xs);
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.bmi-cat {
    padding: var(--spacing-xs);
}

.result-category {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: var(--spacing-md) 0;
}

.badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 700;
}

.badge-underweight {
    background: #dbeafe;
    color: #1e40af;
}

.badge-normal {
    background: #d1fae5;
    color: #065f46;
}

.badge-overweight {
    background: #fed7aa;
    color: #92400e;
}

.badge-obese {
    background: #fee2e2;
    color: #991b1b;
}

[data-theme="dark"] .badge-underweight {
    background: #1e3a8a;
    color: #93c5fd;
}

[data-theme="dark"] .badge-normal {
    background: #064e3b;
    color: #6ee7b7;
}

[data-theme="dark"] .badge-overweight {
    background: #78350f;
    color: #fcd34d;
}

[data-theme="dark"] .badge-obese {
    background: #7f1d1d;
    color: #fca5a5;
}

.bmi-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-md);
}

.bmi-table th,
.bmi-table td {
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    text-align: left;
}

.bmi-table th {
    background: var(--bg-secondary);
    font-weight: 700;
}

.disclaimer {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ============================================
   LOAN CALCULATOR SPECIFIC
   ============================================ */

.loan-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.summary-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.summary-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.summary-value {
    font-size: 2rem;
    font-weight: 700;
}

.summary-card:nth-child(2) {
    background: linear-gradient(135deg, var(--secondary-color), #db2777);
}

.summary-card:nth-child(3) {
    background: linear-gradient(135deg, var(--accent-color), #059669);
}

.loan-chart {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.loan-chart h3 {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.chart-container {
    max-width: 400px;
    margin: 0 auto var(--spacing-lg);
}

.chart-legend {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-sm);
}

.amortization-schedule {
    margin-top: var(--spacing-2xl);
}

.amortization-schedule h3 {
    margin-bottom: var(--spacing-lg);
}

.schedule-controls {
    margin-bottom: var(--spacing-md);
}

.schedule-table-container {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.schedule-table {
    width: 100%;
    border-collapse: collapse;
}

.schedule-table thead {
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 10;
}

.schedule-table th,
.schedule-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    text-align: right;
}

.schedule-table th:first-child,
.schedule-table td:first-child,
.schedule-table th:nth-child(2),
.schedule-table td:nth-child(2) {
    text-align: left;
}

.schedule-table th {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

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

.formula {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 1.25rem;
    text-align: center;
    margin: var(--spacing-lg) 0;
    font-weight: 700;
}

/* ============================================
   CALCULATOR INFO SECTION
   ============================================ */

.calculator-info {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
}

.calculator-info h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.calculator-info ul {
    list-style: none;
    padding: 0;
}

.calculator-info li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.calculator-info li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: 700;
}

.calculator-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

/* ============================================
   POST & PAGE STYLES
   ============================================ */

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.post-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.post-thumbnail img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-content {
    padding: var(--spacing-xl);
}

.post-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.post-title a {
    color: var(--text-primary);
}

.post-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.post-excerpt {
    margin-bottom: var(--spacing-md);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .calculator-keypad {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-sm);
    }
    
    .scientific-calculator .calculator-keypad {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .calc-btn {
        padding: var(--spacing-md);
        font-size: 1rem;
        min-height: 50px;
    }
    
    .display-current {
        font-size: 2rem;
    }
    
    .calculator-tabs {
        gap: var(--spacing-xs);
    }
    
    .calc-tab {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.875rem;
    }
    
    .loan-summary {
        grid-template-columns: 1fr;
    }
    
    .summary-value {
        font-size: 1.5rem;
    }
    
    .schedule-table {
        font-size: 0.75rem;
    }
    
    .schedule-table th,
    .schedule-table td {
        padding: var(--spacing-sm);
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .calculator-container {
        padding: var(--spacing-md);
    }
    
    .calc-btn {
        padding: var(--spacing-sm);
        min-height: 45px;
    }
    
    .display-current {
        font-size: 1.5rem;
    }
    
    .result-value {
        font-size: 2rem;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .site-header,
    .site-footer,
    .breadcrumbs,
    .calculator-form,
    .btn,
    .theme-toggle,
    .mobile-menu-toggle {
        display: none !important;
    }
    
    .result-container {
        display: block !important;
        page-break-inside: avoid;
    }
    
    .amortization-schedule {
        page-break-before: always;
    }
}