/* ==========================================
   MEMORABLE PASSWORD GENERATOR
   Split-Screen Design System
   ========================================== */

:root {
    --primary: #8b5cf6;
    --primary-light: #ede9fe;
    --primary-dark: #7c3aed;
    --secondary: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

/* Container */
.mpg-container {
    max-width: 1100px;
    margin: 0 auto;
    font-family: 'Inter', -apple-system, sans-serif;
    color: var(--gray-700);
    line-height: 1.6;
}

/* Split Hero */
.mpg-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    padding: 64px 24px;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--primary-dark) 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.mpg-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.mpg-hero-left {
    position: relative;
    z-index: 1;
}

.mpg-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,0.2);
}

.mpg-title {
    font-size: 48px;
    font-weight: 800;
    margin: 0 0 20px;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.mpg-subtitle {
    font-size: 18px;
    color: rgba(255,255,255,0.8);
    line-height: 1.7;
    margin: 0 0 24px;
}

.mpg-trust {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

.mpg-trust-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.mpg-hero-right {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.mpg-preview-demo {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-xl);
    padding: 32px;
    width: 100%;
    max-width: 400px;
}

.mpg-demo-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.6);
    margin-bottom: 12px;
}

.mpg-demo-password {
    font-family: 'Menlo', monospace;
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    word-break: break-all;
    margin-bottom: 16px;
    padding: 12px;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius);
}

.mpg-demo-stats {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--success);
}

/* Interface */
.mpg-interface {
    margin: -40px 24px 0;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 32px;
    position: relative;
    z-index: 2;
}

/* Tabs */
.mpg-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    border-bottom: 2px solid var(--gray-100);
    padding-bottom: 12px;
}

.mpg-tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 16px;
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    color: var(--gray-500);
}

.mpg-tab:hover {
    background: var(--gray-50);
    color: var(--gray-700);
}

.mpg-tab.active {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary-dark);
}

.mpg-tab-icon {
    font-size: 28px;
}

.mpg-tab-name {
    font-size: 15px;
    font-weight: 700;
}

.mpg-tab-desc {
    font-size: 12px;
    opacity: 0.8;
}

/* Output Section */
.mpg-output-section {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 32px;
}

.mpg-password-display {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 24px 32px;
    font-family: 'Menlo', monospace;
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-800);
    word-break: break-all;
    text-align: center;
    margin-bottom: 20px;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.mpg-placeholder {
    color: var(--gray-400);
    font-weight: 500;
}

/* Strength Meter */
.mpg-strength-meter {
    margin-bottom: 24px;
}

.mpg-strength-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.mpg-strength-fill {
    height: 100%;
    width: 0;
    background: var(--danger);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.mpg-strength-fill.weak { background: var(--danger); width: 25%; }
.mpg-strength-fill.fair { background: var(--warning); width: 50%; }
.mpg-strength-fill.good { background: #3b82f6; width: 75%; }
.mpg-strength-fill.strong { background: var(--success); width: 100%; }

.mpg-strength-info {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

.mpg-strength-label {
    font-weight: 600;
    color: var(--gray-700);
}

.mpg-entropy {
    color: var(--gray-500);
    font-family: 'Menlo', monospace;
}

/* Actions */
.mpg-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.mpg-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.mpg-btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px -4px var(--primary);
}

.mpg-btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.mpg-btn-secondary {
    background: var(--gray-800);
    color: var(--white);
}

.mpg-btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.mpg-btn-ghost {
    background: transparent;
    color: var(--gray-600);
    border: 2px solid var(--gray-200);
}

/* Settings */
.mpg-settings {
    border-top: 1px solid var(--gray-100);
    padding-top: 24px;
}

.mpg-settings-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0 0 20px;
}

.mpg-settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.mpg-setting {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mpg-setting label {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
}

/* Slider */
.mpg-slider-group {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mpg-slider {
    flex: 1;
    -webkit-appearance: none;
    height: 6px;
    background: var(--gray-200);
    border-radius: 3px;
    outline: none;
}

.mpg-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.mpg-slider-val {
    min-width: 30px;
    font-weight: 700;
    color: var(--primary-dark);
}

/* Segmented Control */
.mpg-segmented {
    display: flex;
    background: var(--gray-100);
    padding: 4px;
    border-radius: var(--radius);
}

.mpg-seg {
    flex: 1;
    padding: 10px 16px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-600);
    transition: all 0.2s;
}

.mpg-seg.active {
    background: var(--white);
    color: var(--primary-dark);
    box-shadow: var(--shadow-sm);
}

/* Toggle */
.mpg-toggle {
    position: relative;
    width: 48px;
    height: 24px;
}

.mpg-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.mpg-toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gray-300);
    border-radius: 24px;
    transition: 0.3s;
}

.mpg-toggle-slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: var(--white);
    border-radius: 50%;
    transition: 0.3s;
    box-shadow: var(--shadow);
}

.mpg-toggle input:checked + .mpg-toggle-slider {
    background: var(--primary);
}

.mpg-toggle input:checked + .mpg-toggle-slider::before {
    transform: translateX(24px);
}

/* Comparison Section */
.mpg-compare {
    padding: 80px 24px;
    background: var(--gray-50);
}

.mpg-section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--gray-900);
    text-align: center;
    margin: 0 0 48px;
}

.mpg-compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.mpg-compare-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--gray-100);
    position: relative;
    transition: transform 0.3s;
}

.mpg-compare-card:hover {
    transform: translateY(-4px);
}

.mpg-compare-card.mpg-best {
    border-color: var(--success);
    box-shadow: 0 0 0 4px var(--success), var(--shadow-lg);
}

.mpg-compare-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success);
    color: var(--white);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.mpg-compare-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-light);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 20px;
}

.mpg-compare-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0 0 12px;
}

.mpg-compare-example {
    font-family: 'Menlo', monospace;
    font-size: 14px;
    color: var(--primary-dark);
    background: var(--primary-light);
    padding: 12px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    word-break: break-all;
}

.mpg-compare-list {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
}

.mpg-compare-list li {
    padding: 8px 0;
    font-size: 15px;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-100);
}

.mpg-compare-list li:last-child {
    border-bottom: none;
}

.mpg-compare-use {
    font-size: 13px;
    color: var(--gray-500);
    font-style: italic;
    padding-top: 16px;
    border-top: 2px solid var(--gray-100);
}

/* Tips Section */
.mpg-tips-section {
    padding: 80px 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.mpg-tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.mpg-tip-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.mpg-tip-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
}

.mpg-tip-num {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary-light);
    line-height: 1;
    margin-bottom: 16px;
}

.mpg-tip-card h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0 0 12px;
}

.mpg-tip-card p {
    font-size: 15px;
    color: var(--gray-600);
    margin: 0;
    line-height: 1.7;
}

/* Content */
.mpg-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 64px 24px;
}

.mpg-content h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--gray-900);
    margin: 48px 0 24px;
    padding-bottom: 16px;
    border-bottom: 3px solid var(--primary-light);
}

.mpg-content p {
    font-size: 18px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 20px;
}

.mpg-math-box {
    background: var(--gray-900);
    color: var(--white);
    padding: 32px;
    border-radius: var(--radius-xl);
    margin: 32px 0;
}

.mpg-math-box h4 {
    font-size: 18px;
    font-weight: 700;
    margin: 24px 0 16px;
    color: var(--primary-light);
}

.mpg-math-box h4:first-child {
    margin-top: 0;
}

.mpg-math-box code {
    display: block;
    background: rgba(255,255,255,0.1);
    padding: 12px;
    border-radius: var(--radius);
    font-family: 'Menlo', monospace;
    font-size: 16px;
    margin-bottom: 12px;
}

.mpg-math-box ul {
    margin: 0;
    padding-left: 20px;
    color: var(--gray-300);
}

.mpg-math-box li {
    margin-bottom: 8px;
}

.mpg-math-winner {
    text-align: center;
    font-size: 24px;
    font-weight: 800;
    color: var(--success);
    margin-top: 24px;
    padding-top: 24px;
    border-top: 2px solid rgba(255,255,255,0.1);
}

.mpg-works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin: 32px 0;
}

.mpg-work-step {
    text-align: center;
    padding: 32px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.mpg-work-icon {
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    margin: 0 auto 16px;
}

.mpg-work-step h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0 0 12px;
}

.mpg-work-step p {
    font-size: 15px;
    color: var(--gray-600);
    margin: 0;
}

.mpg-list {
    list-style: none;
    padding: 0;
    margin: 24px 0;
}

.mpg-list li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 16px;
    font-size: 17px;
    color: var(--gray-600);
}

.mpg-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
    width: 24px;
    height: 24px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

.mpg-dos-donts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 32px 0;
}

.mpg-dos, .mpg-donts {
    padding: 24px;
    border-radius: var(--radius-lg);
}

.mpg-dos {
    background: #f0fdf4;
    border-left: 4px solid var(--success);
}

.mpg-donts {
    background: #fef2f2;
    border-left: 4px solid var(--danger);
}

.mpg-dos h4, .mpg-donts h4 {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 16px;
}

.mpg-dos h4 { color: var(--success); }
.mpg-donts h4 { color: var(--danger); }

.mpg-dos ul, .mpg-donts ul {
    margin: 0;
    padding-left: 20px;
}

.mpg-dos li, .mpg-donts li {
    margin-bottom: 12px;
    color: var(--gray-700);
}

.mpg-faq {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 32px 0;
}

.mpg-faq-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.mpg-faq-item h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--gray-800);
    padding: 20px 24px;
    margin: 0;
    background: var(--gray-50);
    cursor: pointer;
}

.mpg-faq-item p {
    font-size: 16px;
    color: var(--gray-600);
    padding: 20px 24px;
    margin: 0;
    border-top: 1px solid var(--gray-100);
}

.mpg-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 48px;
    border-radius: var(--radius-xl);
    text-align: center;
    margin-top: 48px;
}

.mpg-cta h3 {
    font-size: 28px;
    font-weight: 800;
    margin: 0 0 12px;
}

.mpg-cta p {
    font-size: 18px;
    opacity: 0.9;
    margin: 0;
    color: var(--white);
}

/* Toast */
.mpg-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--gray-900);
    color: var(--white);
    padding: 16px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.mpg-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .mpg-hero {
        grid-template-columns: 1fr;
    }
    
    .mpg-title {
        font-size: 36px;
    }
    
    .mpg-interface {
        margin: -20px 16px 0;
        padding: 24px;
    }
    
    .mpg-tabs {
        flex-direction: column;
    }
    
    .mpg-password-display {
        font-size: 18px;
        padding: 16px;
    }
    
    .mpg-dos-donts {
        grid-template-columns: 1fr;
    }
}