/* 
 * BMI Checker Online - Premium Styling
 * White and Purple Color Scheme
 */

:root {
    --primary-purple: #8a2be2;
    --light-purple: #b57cf5;
    --soft-purple: #f3e8ff;
    --white: #ffffff;
    --off-white: #faf9ff;
    --gray-light: #f0f0f0;
    --gray: #888888;
    --dark: #333333;
    --shadow: 0 10px 30px rgba(138, 43, 226, 0.1);
    --shadow-hover: 0 15px 40px rgba(138, 43, 226, 0.2);
    --transition: all 0.3s ease;
}

/* Main Wrapper */
.bmi-checker-wrapper {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--off-white) 0%, var(--soft-purple) 100%);
    border-radius: 30px;
}

/* Main Card */
.bmi-card {
    background: var(--white);
    border-radius: 24px;
    padding: 40px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(138, 43, 226, 0.1);
    transition: var(--transition);
}

.bmi-card:hover {
    box-shadow: var(--shadow-hover);
}

/* Header */
.bmi-header {
    text-align: center;
    margin-bottom: 40px;
}

.bmi-header h2 {
    color: var(--primary-purple);
    font-size: 32px;
    margin: 0 0 10px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--light-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bmi-header p {
    color: var(--gray);
    font-size: 16px;
    margin: 0;
}

/* Form Styles */
.bmi-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-group label {
    color: #888888;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    padding: 14px 16px;
    border: 2px solid var(--gray-light);
    border-radius: 16px;
    font-size: 16px;
    transition: var(--transition);
    background: var(--off-white);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 4px rgba(138, 43, 226, 0.1);
}

/* Gender Options */
.gender-options {
    display: flex;
    gap: 20px;
    padding: 8px 0;
}

.gender-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 16px;
}

.gender-label input[type="radio"] {
    accent-color: var(--primary-purple);
    width: 18px;
    height: 18px;
}

/* Unit Toggle */
.toggle-group {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 10px;
}

.unit-toggle {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--light-purple) 100%);
    color: var(--white);
    border: none;
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(138, 43, 226, 0.3);
}

.unit-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(138, 43, 226, 0.4);
}

.toggle-indicator {
    color: var(--gray);
    font-size: 13px;
}

/* Height/Weight Inputs */
.height-input, .weight-input {
    display: none;
}

.height-input.active, .weight-input.active {
    display: block;
    animation: slideDown 0.3s ease;
}

.height-ft-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

/* Calculate Button */
.bmi-button {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--light-purple) 100%);
    color: var(--white);
    border: none;
    padding: 18px 30px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 20px;
    box-shadow: 0 10px 25px rgba(138, 43, 226, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.bmi-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(138, 43, 226, 0.4);
}

/* Results Section */
.bmi-result-section {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 2px dashed var(--light-purple);
}

.result-header {
    text-align: center;
    margin-bottom: 30px;
}

.result-header h3 {
    color: var(--primary-purple);
    font-size: 24px;
    margin: 0;
}

/* BMI Value Display */
.bmi-value-display {
    text-align: center;
    margin-bottom: 30px;
}

.bmi-number {
    font-size: 64px;
    font-weight: 800;
    color: var(--primary-purple);
    line-height: 1;
    margin-bottom: 10px;
}

.bmi-number span:first-child {
    font-size: 72px;
}

.bmi-number .bmi-label {
    font-size: 24px;
    color: var(--gray);
    margin-left: 10px;
}

.bmi-category {
    font-size: 20px;
    font-weight: 600;
}

/* Progress Bar */
.bmi-progress-container {
    width: 100%;
    height: 20px;
    background: var(--gray-light);
    border-radius: 30px;
    margin: 30px 0 10px;
    overflow: hidden;
}

.bmi-progress-bar {
    height: 100%;
    width: 0%;
    border-radius: 30px;
    transition: width 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.bmi-scale-labels {
    display: flex;
    justify-content: space-between;
    color: var(--gray);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 30px;
}

/* Ideal Weight Box */
.ideal-weight-box {
    background: linear-gradient(135deg, var(--soft-purple) 0%, var(--off-white) 100%);
    padding: 25px;
    border-radius: 20px;
    text-align: center;
    margin-bottom: 30px;
}

.ideal-weight-box h4 {
    color: var(--primary-purple);
    font-size: 18px;
    margin: 0 0 15px;
}

.weight-range {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.weight-status {
    font-size: 18px;
    font-weight: 600;
}

/* Personalized Message */
.personalized-message {
    background: var(--white);
    padding: 20px;
    border-radius: 16px;
    margin-bottom: 30px;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    border-left: 4px solid var(--primary-purple);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* Health Tips */
.health-tips {
    margin-bottom: 30px;
}

.health-tips h4 {
    color: var(--primary-purple);
    font-size: 18px;
    margin: 0 0 15px;
}

.tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tips-list li {
    padding: 12px 15px;
    margin-bottom: 10px;
    background: var(--off-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.tips-list li:before {
    content: "✓";
    color: var(--primary-purple);
    font-weight: bold;
    margin-right: 10px;
}

.tips-list li:hover {
    transform: translateX(5px);
    background: var(--soft-purple);
}

/* Share Buttons */
.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 30px;
}

.share-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--white);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.share-btn.whatsapp { background: #25D366; }
.share-btn.facebook { background: #1877F2; }
.share-btn.twitter { background: #1DA1F2; }
.share-btn.copy { background: var(--primary-purple); }
.share-btn.print { background: var(--dark); }

.share-btn:hover {
    transform: translateY(-3px);
    filter: brightness(110%);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .bmi-checker-wrapper {
        margin: 20px auto;
        padding: 10px;
    }
    
    .bmi-card {
        padding: 25px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .bmi-number {
        font-size: 48px;
    }
    
    .bmi-number span:first-child {
        font-size: 56px;
    }
    
    .weight-range {
        font-size: 24px;
    }
    
    .share-buttons {
        flex-direction: column;
    }
    
    .share-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .bmi-checker-wrapper {
        background: linear-gradient(135deg, #1a1a2e 0%, #2d1b3a 100%);
    }
    
    .bmi-card {
        background: #16213e;
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .form-control {
        background: #0f0f1f;
        border-color: #2a2a3a;
        color: #fff;
    }
    
    .ideal-weight-box {
        background: linear-gradient(135deg, #1e2a47 0%, #16213e 100%);
    }
    
    .tips-list li {
        background: #1e2a47;
        color: #fff;
    }
    
    .personalized-message {
        background: #1e2a47;
        color: #fff;
    }
}

/* Print Styles */
@media print {
    .share-buttons,
    .bmi-button,
    .unit-toggle {
        display: none;
    }
    
    .bmi-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}