/* =====================================================
   BMI CALCULATOR STYLES
   Basic Calculator Online - BMI Calculator
   ===================================================== */

/* ======================= SECTION ======================= */
.bmi-calculator-section {
    padding: 2rem 0 4rem;
    min-height: 60vh;
}

/* ======================= MAIN CALCULATOR CARD ======================= */
.bmi-calculator-card {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.bmi-calculator-card:hover {
    box-shadow: var(--shadow-2xl);
    transform: translateY(-4px);
}

/* Header */
.bmi-calculator-header {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.bmi-header-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: white;
}

.bmi-header-info h2 {
    color: white;
    font-size: 1.375rem;
    font-weight: 700;
    margin: 0;
}

.bmi-header-info p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9375rem;
    margin: 0.25rem 0 0;
}

/* Body */
.bmi-calculator-body {
    padding: 1.5rem;
}

/* Unit Toggle */
.bmi-unit-toggle {
    display: flex;
    background: var(--bg-body);
    border-radius: var(--radius-lg);
    padding: 0.25rem;
    margin-bottom: 1.5rem;
}

.unit-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.unit-btn.active {
    background: white;
    color: #10b981;
    box-shadow: var(--shadow-sm);
}

.unit-btn:hover:not(.active) {
    color: var(--text-primary);
}

/* Input Section */
.bmi-input-section {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.bmi-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.bmi-label i {
    color: #10b981;
}

/* Gender Selection */
.gender-options {
    display: flex;
    gap: 0.75rem;
}

.gender-option {
    flex: 1;
    cursor: pointer;
}

.gender-option input {
    display: none;
}

.gender-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-body);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.gender-card i {
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.gender-card span {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.gender-option input:checked + .gender-card {
    border-color: #10b981;
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
}

.gender-option input:checked + .gender-card i {
    color: #10b981;
}

.gender-option input[value="male"]:checked + .gender-card i {
    color: #3b82f6;
}

.gender-option input[value="male"]:checked + .gender-card {
    border-color: #3b82f6;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

.gender-option input[value="female"]:checked + .gender-card i {
    color: #ec4899;
}

.gender-option input[value="female"]:checked + .gender-card {
    border-color: #ec4899;
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
}

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

.bmi-input {
    width: 100%;
    padding: 1rem 4rem 1rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    background: white;
    transition: all var(--transition-fast);
}

.bmi-input:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.bmi-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.input-unit {
    position: absolute;
    right: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-body);
    padding: 0.375rem 0.625rem;
    border-radius: var(--radius-md);
}

.input-dual {
    display: flex;
    gap: 0.75rem;
}

.input-dual .input-with-unit {
    flex: 1;
}

/* Remove number input spinners */
.bmi-input::-webkit-outer-spin-button,
.bmi-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.bmi-input[type=number] {
    -moz-appearance: textfield;
}

/* Calculate Button */
.bmi-calculate-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 1.125rem 2rem;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border: none;
    border-radius: var(--radius-xl);
    color: white;
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.bmi-calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.35);
}

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

/* ======================= RESULT CARD ======================= */
.bmi-result-card {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.result-placeholder {
    padding: 3rem 2rem;
    text-align: center;
}

.placeholder-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #10b981;
}

.result-placeholder h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.result-placeholder p {
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin: 0;
}

/* Result Content */
.result-content {
    padding: 1.5rem;
}

.bmi-value-display {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-radius: var(--radius-xl);
    margin-bottom: 1.5rem;
}

.bmi-label-text {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.bmi-value {
    display: block;
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bmi-category {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: #10b981;
    color: white;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

/* Category Colors */
.bmi-value-display.underweight .bmi-value {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.bmi-value-display.underweight .bmi-category {
    background: #3b82f6;
}

.bmi-value-display.underweight {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

.bmi-value-display.normal .bmi-value {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.bmi-value-display.normal .bmi-category {
    background: #10b981;
}

.bmi-value-display.normal {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
}

.bmi-value-display.overweight .bmi-value {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.bmi-value-display.overweight .bmi-category {
    background: #f97316;
}

.bmi-value-display.overweight {
    background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 100%);
}

.bmi-value-display.obese .bmi-value {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.bmi-value-display.obese .bmi-category {
    background: #ef4444;
}

.bmi-value-display.obese {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
}

/* BMI Gauge */
.bmi-gauge {
    margin-bottom: 1.5rem;
    position: relative;
}

.gauge-bar {
    display: flex;
    height: 24px;
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.gauge-section {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.625rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gauge-section.underweight {
    flex: 2.5;
    background: linear-gradient(90deg, #60a5fa 0%, #3b82f6 100%);
}

.gauge-section.normal {
    flex: 6.5;
    background: linear-gradient(90deg, #34d399 0%, #10b981 100%);
}

.gauge-section.overweight {
    flex: 5;
    background: linear-gradient(90deg, #fbbf24 0%, #f97316 100%);
}

.gauge-section.obese {
    flex: 10;
    background: linear-gradient(90deg, #f87171 0%, #ef4444 100%);
}

.gauge-indicator {
    position: absolute;
    top: 0;
    left: 0;
    transform: translateX(-50%);
    transition: left 0.5s ease;
}

.indicator-arrow {
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 10px solid #1f2937;
    margin: 0 auto;
}

.indicator-value {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-top: 0.25rem;
}

.gauge-labels {
    display: flex;
    justify-content: space-between;
    padding: 0 0.25rem;
}

.gauge-labels span {
    font-size: 0.6875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Weight Range */
.bmi-weight-range {
    padding: 1rem 1.25rem;
    background: var(--bg-body);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
}

.bmi-weight-range h5 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.weight-range-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.range-item {
    text-align: center;
}

.range-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.range-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: #10b981;
}

.range-separator {
    font-size: 1.25rem;
    color: var(--text-muted);
}

/* Suggestion */
.bmi-suggestion {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: var(--radius-lg);
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
}

.suggestion-icon {
    width: 32px;
    height: 32px;
    background: #10b981;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.bmi-suggestion p {
    font-size: 0.875rem;
    color: #166534;
    margin: 0;
    line-height: 1.5;
}

.bmi-suggestion.warning {
    background: #fff7ed;
    border-color: #fed7aa;
}

.bmi-suggestion.warning .suggestion-icon {
    background: #f97316;
}

.bmi-suggestion.warning p {
    color: #9a3412;
}

.bmi-suggestion.danger {
    background: #fef2f2;
    border-color: #fecaca;
}

.bmi-suggestion.danger .suggestion-icon {
    background: #ef4444;
}

.bmi-suggestion.danger p {
    color: #991b1b;
}

.bmi-suggestion.info {
    background: #eff6ff;
    border-color: #bfdbfe;
}

.bmi-suggestion.info .suggestion-icon {
    background: #3b82f6;
}

.bmi-suggestion.info p {
    color: #1e40af;
}

/* ======================= CATEGORIES CARD ======================= */
.bmi-categories-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.categories-header {
    padding: 1rem 1.25rem;
    background: var(--bg-body);
    border-bottom: 1px solid var(--border-color);
}

.categories-header h5 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.categories-list {
    padding: 0.75rem;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.category-item:hover {
    background: var(--bg-body);
}

.category-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    flex-shrink: 0;
}

.category-item.underweight .category-color { background: #3b82f6; }
.category-item.normal .category-color { background: #10b981; }
.category-item.overweight .category-color { background: #f97316; }
.category-item.obese .category-color { background: #ef4444; }

.category-info {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.category-range {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-muted);
}

/* ======================= INFO SECTION ======================= */
.bmi-info-section {
    padding: 3rem 0;
    background: var(--bg-body);
}

.bmi-info-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    height: 100%;
}

.info-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.info-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.info-icon.green { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.info-icon.blue { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }

.info-card-header h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.info-card-body p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.info-card-body p:last-child {
    margin-bottom: 0;
}

/* ======================= FEATURES SECTION ======================= */
.bmi-features-section {
    padding: 4rem 0 5rem;
}

.bmi-section-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--text-muted);
    margin: 0;
}

.bmi-feature-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    height: 100%;
    transition: all var(--transition-normal);
}

.bmi-feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.bmi-feature-card .feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.bmi-feature-card .feature-icon.green { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.bmi-feature-card .feature-icon.blue { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.bmi-feature-card .feature-icon.purple { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.bmi-feature-card .feature-icon.orange { background: rgba(249, 115, 22, 0.1); color: #f97316; }

.bmi-feature-card h5 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.bmi-feature-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

/* ======================= RESPONSIVE ======================= */
@media (max-width: 991.98px) {
    .bmi-calculator-section {
        padding: 1.5rem 0 3rem;
    }

    .bmi-value {
        font-size: 3rem;
    }
}

@media (max-width: 767.98px) {
    .bmi-calculator-header {
        flex-direction: column;
        text-align: center;
    }

    .gender-options {
        flex-direction: column;
    }

    .bmi-value {
        font-size: 2.5rem;
    }

    .gauge-section span {
        display: none;
    }

    .bmi-info-section {
        padding: 2rem 0;
    }

    .bmi-features-section {
        padding: 3rem 0 4rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 575.98px) {
    .input-dual {
        flex-direction: column;
    }

    .weight-range-display {
        gap: 1rem;
    }

    .range-value {
        font-size: 1.125rem;
    }
}