/* ==========================================================================
   RenalDose — Enhanced Components
   Pro features, modals, cookie banner, pages, CKD gauge
   ========================================================================== */

/* ==========================================================================
   1. Upgrade / Auth Modal
   ========================================================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-overlay);
    background: var(--bg-overlay);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    animation: fadeIn 0.2s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 440px;
    width: 100%;
    padding: var(--space-2xl);
    position: relative;
    animation: slideDown 0.25s ease;
    border: 1px solid var(--border-primary);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 18px;
    line-height: 1;
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.modal-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background-color: var(--brand-600);
    color: white;
    font-size: var(--text-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.modal-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.modal-subtitle {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.modal-features {
    margin-bottom: var(--space-xl);
}

.modal-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 0;
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.modal-features li::before {
    content: '';
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    background: var(--status-safe);
    border-radius: 50%;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    -webkit-mask-size: 14px;
    mask-size: 14px;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
}

.modal-price {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.modal-price-amount {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--text-primary);
}

.modal-price-period {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.modal-price-note {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-xs);
}

.modal-divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
    color: var(--text-tertiary);
    font-size: var(--text-xs);
}

.modal-divider::before,
.modal-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-primary);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.modal-form .btn {
    width: 100%;
    padding: 12px;
}

.modal-footer {
    text-align: center;
    margin-top: var(--space-md);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* Google Sign-In Button */
.btn-google {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-secondary);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
    font-size: var(--text-sm);
}

.btn-google:hover {
    background: var(--bg-secondary);
    border-color: var(--border-secondary);
    box-shadow: var(--shadow-sm);
}

.btn-google svg {
    width: 18px;
    height: 18px;
}

/* ==========================================================================
   2. User Avatar / Account Dropdown
   ========================================================================== */

.user-menu {
    position: relative;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--brand-600);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: 700;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color var(--transition-fast);
}

.user-avatar:hover {
    border-color: var(--brand-300);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 200px;
    z-index: var(--z-dropdown);
    display: none;
    animation: slideDown 0.15s ease;
    overflow: hidden;
}

.user-dropdown.active {
    display: block;
}

.user-dropdown-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-primary);
}

.user-dropdown-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.user-dropdown-email {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: 2px;
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px var(--space-md);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.user-dropdown-item:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.user-dropdown-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.user-dropdown-divider {
    height: 1px;
    background: var(--border-primary);
}

/* ==========================================================================
   3. CKD Stage Gauge
   ========================================================================== */

.ckd-gauge {
    display: flex;
    border-radius: var(--radius-full);
    overflow: hidden;
    height: 8px;
    background: var(--bg-tertiary);
    margin: var(--space-sm) 0 var(--space-md);
}

.ckd-gauge-segment {
    flex: 1;
    transition: opacity var(--transition-normal);
    position: relative;
}

.ckd-gauge-segment[data-stage="g1"]  { background: var(--status-safe); }
.ckd-gauge-segment[data-stage="g2"]  { background: #34d399; }
.ckd-gauge-segment[data-stage="g3a"] { background: var(--status-mild); }
.ckd-gauge-segment[data-stage="g3b"] { background: var(--status-moderate); }
.ckd-gauge-segment[data-stage="g4"]  { background: #f87171; }
.ckd-gauge-segment[data-stage="g5"]  { background: var(--status-critical); }

.ckd-gauge-segment.inactive { opacity: 0.15; }

.ckd-gauge-segment.active::after {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--text-primary);
}

.ckd-gauge-labels {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-tertiary);
    font-weight: 600;
    padding: 0 2px;
}

/* ==========================================================================
   4. Cookie Consent Banner
   ========================================================================== */

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-toast);
    background: var(--bg-primary);
    border-top: 1px solid var(--border-primary);
    box-shadow: 0 -4px 12px rgba(0,0,0,0.08);
    padding: var(--space-md) var(--space-lg);
    display: none;
    animation: slideUp 0.3s ease;
}

.cookie-banner.active {
    display: block;
}

.cookie-content {
    max-width: var(--max-content);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.cookie-text {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.cookie-text a {
    color: var(--brand-600);
    text-decoration: underline;
}

.cookie-actions {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0;
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}

/* ==========================================================================
   5. Inline Pricing Section
   ========================================================================== */

.pricing-inline {
    margin-top: var(--space-3xl);
    padding: var(--space-3xl) var(--space-xl);
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    text-align: center;
}

.pricing-inline-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 14px;
    background: var(--accent-100);
    color: var(--accent-700);
    font-size: var(--text-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-md);
}

[data-theme="dark"] .pricing-inline-badge {
    background: rgba(8,145,178,0.15);
    color: var(--accent-400);
}

.pricing-inline h2 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.pricing-inline-subtitle {
    color: var(--text-tertiary);
    font-size: var(--text-base);
    margin-bottom: var(--space-2xl);
}

.pricing-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    text-align: left;
}

.pricing-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    position: relative;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.pricing-card.featured {
    border-color: var(--brand-500);
    box-shadow: 0 0 0 1px var(--brand-500), var(--shadow-lg);
}

.pricing-card-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--brand-600);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 14px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.pricing-card-name {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.pricing-card-desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
}

.pricing-card-price {
    margin-bottom: var(--space-lg);
}

.pricing-card-amount {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--text-primary);
}

.pricing-card-period {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.pricing-card-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: var(--space-xl);
}

.pricing-card-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-normal);
}

.pricing-card-features li svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--status-safe);
}

.pricing-card .btn {
    width: 100%;
}

/* ==========================================================================
   6. Page Layout (Pricing, Legal, Contact)
   ========================================================================== */

.page-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
}

.page-container.wide {
    max-width: var(--max-content);
}

.page-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.page-header h1 {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.page-header p {
    font-size: var(--text-lg);
    color: var(--text-tertiary);
    max-width: 560px;
    margin: 0 auto;
}

/* Legal pages */
.legal-content {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

.legal-content h2 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-primary);
}

.legal-content h3 {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
}

.legal-content p {
    margin-bottom: var(--space-md);
}

.legal-content ul, .legal-content ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-xl);
}

.legal-content ul { list-style: disc; }
.legal-content ol { list-style: decimal; }

.legal-content li {
    margin-bottom: var(--space-xs);
    padding-left: var(--space-xs);
}

.legal-content a {
    color: var(--brand-600);
    text-decoration: underline;
}

.legal-meta {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-bottom: var(--space-xl);
    text-align: center;
}

/* Contact form */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-form textarea.form-control {
    min-height: 140px;
    resize: vertical;
}

.contact-info-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-primary);
}

.contact-info-item:last-child {
    border-bottom: none;
}

.contact-info-icon {
    width: 36px;
    height: 36px;
    background: var(--brand-100);
    color: var(--brand-600);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

[data-theme="dark"] .contact-info-icon {
    background: var(--primary-light);
    color: var(--brand-300);
}

.contact-info-icon svg {
    width: 18px;
    height: 18px;
}

.contact-info-label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-info-value {
    font-size: var(--text-sm);
    color: var(--text-primary);
    margin-top: 2px;
}

/* ==========================================================================
   7. Pricing Page Specific
   ========================================================================== */

.pricing-hero {
    padding: var(--space-3xl) 0;
    text-align: center;
}

.pricing-hero h1 {
    font-size: var(--text-4xl);
    font-weight: 800;
    letter-spacing: var(--tracking-tight);
    margin-bottom: var(--space-sm);
}

.pricing-hero p {
    font-size: var(--text-lg);
    color: var(--text-tertiary);
    max-width: 500px;
    margin: 0 auto;
}

.pricing-comparison {
    max-width: 800px;
    margin: 0 auto var(--space-3xl);
}

.comparison-table {
    width: 100%;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: 12px var(--space-md);
    font-size: var(--text-sm);
    text-align: left;
    border-bottom: 1px solid var(--border-primary);
}

.comparison-table th {
    background: var(--bg-secondary);
    font-weight: 700;
    color: var(--text-primary);
}

.comparison-table td {
    color: var(--text-secondary);
}

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

.comparison-check {
    color: var(--status-safe);
    font-weight: 700;
}

.comparison-cross {
    color: var(--gray-300);
}

/* FAQ */
.faq-section {
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.faq-section h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.faq-item {
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-primary);
    border: none;
    cursor: pointer;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: var(--text-tertiary);
    transition: transform var(--transition-normal);
}

.faq-item.open .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 var(--space-lg) var(--space-md);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* Creator / About section */
.creator-section {
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
    text-align: center;
}

.creator-section h2 {
    margin-bottom: var(--space-lg);
}

.creator-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    display: flex;
    align-items: flex-start;
    gap: var(--space-xl);
    text-align: left;
    box-shadow: var(--shadow-sm);
}

.creator-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--brand-600);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    font-weight: 800;
    flex-shrink: 0;
}

.creator-name {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.creator-title {
    font-size: var(--text-sm);
    color: var(--accent-600);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.creator-bio {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-md);
}

.creator-credentials {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.creator-credential {
    display: inline-flex;
    padding: 3px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Payment method logos */
.payment-methods {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    padding: var(--space-lg) 0;
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

.payment-logos {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.payment-logo {
    height: 24px;
    opacity: 0.5;
    filter: grayscale(1);
    transition: opacity var(--transition-fast), filter var(--transition-fast);
}

.payment-logo:hover {
    opacity: 1;
    filter: none;
}

/* ==========================================================================
   8. Toast Notifications
   ========================================================================== */

.toast-container {
    position: fixed;
    top: calc(var(--header-h) + var(--space-md));
    right: var(--space-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    animation: slideDown 0.25s ease;
    max-width: 360px;
}

.toast-success { border-left: 4px solid var(--status-safe); }
.toast-error   { border-left: 4px solid var(--error-color); }
.toast-info    { border-left: 4px solid var(--brand-500); }

/* ==========================================================================
   9. Responsive Overrides for Enhanced Components
   ========================================================================== */

@media (max-width: 768px) {
    .modal {
        margin: var(--space-md);
        padding: var(--space-xl);
        max-width: none;
    }

    .pricing-cards {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .creator-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .creator-credentials {
        justify-content: center;
    }

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-actions {
        justify-content: center;
    }

    .comparison-table {
        font-size: var(--text-xs);
    }

    .comparison-table th,
    .comparison-table td {
        padding: 8px 10px;
    }

    .page-header h1 {
        font-size: var(--text-2xl);
    }

    .pricing-hero h1 {
        font-size: var(--text-2xl);
    }
}

@media (max-width: 480px) {
    .pricing-inline {
        padding: var(--space-xl) var(--space-md);
    }

    .modal {
        padding: var(--space-lg);
    }

    .creator-avatar {
        width: 60px;
        height: 60px;
        font-size: var(--text-xl);
    }
}