/*
Theme Name: RegrowProtocol
Theme URI: https://regrowprotocol.com
Author: RegrowProtocol Team
Author URI: https://regrowprotocol.com
Description: The World's Leading Hair Loss Authority - A custom WordPress theme designed for evidence-based hair loss content, interactive tools, and community engagement.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: regrowprotocol
Tags: health, medical, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready

RegrowProtocol WordPress Theme
Copyright (C) 2024 RegrowProtocol
*/

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Brand Colors */
    --rg-primary: #2563eb;
    --rg-primary-hover: #1d4ed8;
    --rg-primary-light: #dbeafe;
    --rg-secondary: #10b981;
    --rg-secondary-hover: #059669;
    --rg-accent: #f59e0b;
    
    /* Neutral Colors */
    --rg-text: #1f2937;
    --rg-text-light: #6b7280;
    --rg-text-muted: #9ca3af;
    --rg-bg: #ffffff;
    --rg-bg-alt: #f9fafb;
    --rg-bg-dark: #f3f4f6;
    --rg-border: #e5e7eb;
    --rg-border-light: #f3f4f6;
    
    /* Semantic Colors */
    --rg-success: #10b981;
    --rg-warning: #f59e0b;
    --rg-error: #ef4444;
    --rg-info: #3b82f6;
    
    /* Typography */
    --rg-font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --rg-font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --rg-font-mono: 'SF Mono', 'Fira Code', 'Monaco', monospace;
    
    /* Font Sizes */
    --rg-text-xs: 0.75rem;
    --rg-text-sm: 0.875rem;
    --rg-text-base: 1rem;
    --rg-text-lg: 1.125rem;
    --rg-text-xl: 1.25rem;
    --rg-text-2xl: 1.5rem;
    --rg-text-3xl: 1.875rem;
    --rg-text-4xl: 2.25rem;
    --rg-text-5xl: 3rem;
    
    /* Spacing */
    --rg-space-1: 0.25rem;
    --rg-space-2: 0.5rem;
    --rg-space-3: 0.75rem;
    --rg-space-4: 1rem;
    --rg-space-5: 1.25rem;
    --rg-space-6: 1.5rem;
    --rg-space-8: 2rem;
    --rg-space-10: 2.5rem;
    --rg-space-12: 3rem;
    --rg-space-16: 4rem;
    --rg-space-20: 5rem;
    
    /* Layout */
    --rg-container-sm: 640px;
    --rg-container-md: 768px;
    --rg-container-lg: 1024px;
    --rg-container-xl: 1280px;
    --rg-container-2xl: 1536px;
    --rg-content-width: 720px;
    
    /* Border Radius */
    --rg-radius-sm: 0.25rem;
    --rg-radius: 0.375rem;
    --rg-radius-md: 0.5rem;
    --rg-radius-lg: 0.75rem;
    --rg-radius-xl: 1rem;
    --rg-radius-full: 9999px;
    
    /* Shadows */
    --rg-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --rg-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --rg-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --rg-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --rg-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --rg-transition-fast: 150ms ease;
    --rg-transition: 200ms ease;
    --rg-transition-slow: 300ms ease;
    
    /* Z-Index Scale */
    --rg-z-dropdown: 1000;
    --rg-z-sticky: 1020;
    --rg-z-fixed: 1030;
    --rg-z-modal-backdrop: 1040;
    --rg-z-modal: 1050;
    --rg-z-popover: 1060;
    --rg-z-tooltip: 1070;
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--rg-font-primary);
    font-size: var(--rg-text-base);
    line-height: 1.6;
    color: var(--rg-text);
    background-color: var(--rg-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--rg-font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--rg-text);
    margin-bottom: var(--rg-space-4);
}

h1 { font-size: var(--rg-text-4xl); }
h2 { font-size: var(--rg-text-3xl); }
h3 { font-size: var(--rg-text-2xl); }
h4 { font-size: var(--rg-text-xl); }
h5 { font-size: var(--rg-text-lg); }
h6 { font-size: var(--rg-text-base); }

p {
    margin-bottom: var(--rg-space-4);
}

a {
    color: var(--rg-primary);
    text-decoration: none;
    transition: color var(--rg-transition-fast);
}

a:hover {
    color: var(--rg-primary-hover);
    text-decoration: underline;
}

strong, b {
    font-weight: 600;
}

/* ============================================
   Layout Components
   ============================================ */
.rg-container {
    width: 100%;
    max-width: var(--rg-container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--rg-space-4);
    padding-right: var(--rg-space-4);
}

.rg-content-container {
    max-width: var(--rg-content-width);
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Header Styles
   ============================================ */
.rg-header {
    background: var(--rg-bg);
    border-bottom: 1px solid var(--rg-border);
    position: sticky;
    top: 0;
    z-index: var(--rg-z-sticky);
}

.rg-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.rg-logo {
    display: flex;
    align-items: center;
    gap: var(--rg-space-2);
    font-size: var(--rg-text-xl);
    font-weight: 700;
    color: var(--rg-text);
}

.rg-logo:hover {
    text-decoration: none;
}

.rg-logo img {
    height: 40px;
    width: auto;
}

/* ============================================
   Navigation
   ============================================ */
.rg-nav {
    display: none;
}

@media (min-width: 1024px) {
    .rg-nav {
        display: flex;
        align-items: center;
        gap: var(--rg-space-8);
    }
}

.rg-nav__list {
    display: flex;
    align-items: center;
    gap: var(--rg-space-6);
    list-style: none;
}

.rg-nav__link {
    font-size: var(--rg-text-sm);
    font-weight: 500;
    color: var(--rg-text);
    padding: var(--rg-space-2) 0;
    transition: color var(--rg-transition-fast);
}

.rg-nav__link:hover {
    color: var(--rg-primary);
    text-decoration: none;
}

/* Mobile Menu Toggle */
.rg-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: none;
    background: none;
    cursor: pointer;
}

@media (min-width: 1024px) {
    .rg-mobile-toggle {
        display: none;
    }
}

/* ============================================
   Main Content
   ============================================ */
.rg-main {
    min-height: calc(100vh - 70px - 300px);
    padding: var(--rg-space-8) 0;
}

/* ============================================
   Article Styles
   ============================================ */
.rg-article {
    max-width: var(--rg-content-width);
    margin: 0 auto;
}

.rg-article__header {
    margin-bottom: var(--rg-space-8);
}

.rg-article__title {
    font-size: var(--rg-text-4xl);
    margin-bottom: var(--rg-space-4);
}

.rg-article__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--rg-space-4);
    font-size: var(--rg-text-sm);
    color: var(--rg-text-light);
}

.rg-article__content {
    font-size: var(--rg-text-lg);
    line-height: 1.8;
}

.rg-article__content h2 {
    margin-top: var(--rg-space-12);
    margin-bottom: var(--rg-space-4);
}

.rg-article__content h3 {
    margin-top: var(--rg-space-8);
    margin-bottom: var(--rg-space-3);
}

.rg-article__content ul,
.rg-article__content ol {
    margin-bottom: var(--rg-space-4);
    padding-left: var(--rg-space-6);
}

.rg-article__content li {
    margin-bottom: var(--rg-space-2);
}

.rg-article__content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--rg-radius-lg);
    margin: var(--rg-space-6) 0;
}

.rg-article__content blockquote {
    border-left: 4px solid var(--rg-primary);
    padding-left: var(--rg-space-4);
    margin: var(--rg-space-6) 0;
    font-style: italic;
    color: var(--rg-text-light);
}

/* ============================================
   Sidebar
   ============================================ */
.rg-sidebar {
    padding: var(--rg-space-6);
    background: var(--rg-bg-alt);
    border-radius: var(--rg-radius-lg);
}

.rg-widget {
    margin-bottom: var(--rg-space-8);
}

.rg-widget:last-child {
    margin-bottom: 0;
}

.rg-widget__title {
    font-size: var(--rg-text-lg);
    margin-bottom: var(--rg-space-4);
    padding-bottom: var(--rg-space-2);
    border-bottom: 2px solid var(--rg-primary);
}

/* ============================================
   Footer
   ============================================ */
.rg-footer {
    background: var(--rg-bg-dark);
    border-top: 1px solid var(--rg-border);
    padding: var(--rg-space-16) 0 var(--rg-space-8);
}

.rg-footer__grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--rg-space-8);
}

@media (min-width: 640px) {
    .rg-footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .rg-footer__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.rg-footer__section {
    margin-bottom: var(--rg-space-6);
}

.rg-footer__title {
    font-size: var(--rg-text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--rg-text);
    margin-bottom: var(--rg-space-4);
}

.rg-footer__links {
    list-style: none;
}

.rg-footer__link {
    display: block;
    padding: var(--rg-space-1) 0;
    font-size: var(--rg-text-sm);
    color: var(--rg-text-light);
}

.rg-footer__link:hover {
    color: var(--rg-primary);
}

.rg-footer__bottom {
    margin-top: var(--rg-space-8);
    padding-top: var(--rg-space-6);
    border-top: 1px solid var(--rg-border);
    text-align: center;
}

.rg-footer__copyright {
    font-size: var(--rg-text-sm);
    color: var(--rg-text-muted);
}

/* ============================================
   Buttons
   ============================================ */
.rg-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--rg-space-2);
    padding: var(--rg-space-3) var(--rg-space-6);
    font-family: var(--rg-font-primary);
    font-size: var(--rg-text-sm);
    font-weight: 500;
    line-height: 1.5;
    text-decoration: none;
    border: none;
    border-radius: var(--rg-radius);
    cursor: pointer;
    transition: all var(--rg-transition-fast);
}

.rg-btn--primary {
    background: var(--rg-primary);
    color: white;
}

.rg-btn--primary:hover {
    background: var(--rg-primary-hover);
    text-decoration: none;
    color: white;
}

.rg-btn--secondary {
    background: var(--rg-secondary);
    color: white;
}

.rg-btn--secondary:hover {
    background: var(--rg-secondary-hover);
    text-decoration: none;
    color: white;
}

.rg-btn--outline {
    background: transparent;
    border: 2px solid var(--rg-primary);
    color: var(--rg-primary);
}

.rg-btn--outline:hover {
    background: var(--rg-primary);
    color: white;
    text-decoration: none;
}

.rg-btn--lg {
    padding: var(--rg-space-4) var(--rg-space-8);
    font-size: var(--rg-text-base);
}

/* ============================================
   Cards
   ============================================ */
.rg-card {
    background: var(--rg-bg);
    border: 1px solid var(--rg-border);
    border-radius: var(--rg-radius-lg);
    overflow: hidden;
    transition: box-shadow var(--rg-transition);
}

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

.rg-card__image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.rg-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--rg-transition-slow);
}

.rg-card:hover .rg-card__image img {
    transform: scale(1.05);
}

.rg-card__body {
    padding: var(--rg-space-5);
}

.rg-card__title {
    font-size: var(--rg-text-lg);
    margin-bottom: var(--rg-space-2);
}

.rg-card__excerpt {
    font-size: var(--rg-text-sm);
    color: var(--rg-text-light);
    margin-bottom: var(--rg-space-4);
}

/* ============================================
   Hub Cards (Category Navigation)
   ============================================ */
.rg-hubs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--rg-space-4);
}

@media (min-width: 768px) {
    .rg-hubs {
        grid-template-columns: repeat(4, 1fr);
    }
}

.rg-hub-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--rg-space-6);
    background: var(--rg-bg);
    border: 1px solid var(--rg-border);
    border-radius: var(--rg-radius-lg);
    transition: all var(--rg-transition);
}

.rg-hub-card:hover {
    border-color: var(--rg-primary);
    box-shadow: var(--rg-shadow-md);
    text-decoration: none;
}

.rg-hub-card__icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--rg-space-3);
    color: var(--rg-primary);
}

.rg-hub-card__title {
    font-size: var(--rg-text-base);
    font-weight: 600;
    color: var(--rg-text);
    margin-bottom: var(--rg-space-1);
}

.rg-hub-card__count {
    font-size: var(--rg-text-xs);
    color: var(--rg-text-muted);
}

/* ============================================
   Trust Badges
   ============================================ */
.rg-trust-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--rg-space-6);
    padding: var(--rg-space-8) 0;
}

.rg-trust-badge {
    display: flex;
    align-items: center;
    gap: var(--rg-space-2);
    font-size: var(--rg-text-sm);
    color: var(--rg-text-light);
}

.rg-trust-badge__icon {
    width: 20px;
    height: 20px;
    color: var(--rg-secondary);
}

/* ============================================
   Disclaimers
   ============================================ */
.rg-disclaimer {
    padding: var(--rg-space-4);
    background: var(--rg-bg-alt);
    border-left: 4px solid var(--rg-warning);
    border-radius: var(--rg-radius);
    font-size: var(--rg-text-sm);
    color: var(--rg-text-light);
    margin: var(--rg-space-6) 0;
}

.rg-disclaimer--medical {
    border-left-color: var(--rg-error);
}

.rg-disclaimer__title {
    font-weight: 600;
    color: var(--rg-text);
    margin-bottom: var(--rg-space-2);
}

/* ============================================
   Forms
   ============================================ */
.rg-form-group {
    margin-bottom: var(--rg-space-4);
}

.rg-label {
    display: block;
    font-size: var(--rg-text-sm);
    font-weight: 500;
    color: var(--rg-text);
    margin-bottom: var(--rg-space-1);
}

.rg-input,
.rg-select,
.rg-textarea {
    width: 100%;
    padding: var(--rg-space-3) var(--rg-space-4);
    font-family: var(--rg-font-primary);
    font-size: var(--rg-text-base);
    color: var(--rg-text);
    background: var(--rg-bg);
    border: 1px solid var(--rg-border);
    border-radius: var(--rg-radius);
    transition: border-color var(--rg-transition-fast), box-shadow var(--rg-transition-fast);
}

.rg-input:focus,
.rg-select:focus,
.rg-textarea:focus {
    outline: none;
    border-color: var(--rg-primary);
    box-shadow: 0 0 0 3px var(--rg-primary-light);
}

/* ============================================
   Utility Classes
   ============================================ */
.rg-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.rg-text-center { text-align: center; }
.rg-text-left { text-align: left; }
.rg-text-right { text-align: right; }

.rg-mt-0 { margin-top: 0; }
.rg-mt-4 { margin-top: var(--rg-space-4); }
.rg-mt-8 { margin-top: var(--rg-space-8); }
.rg-mb-0 { margin-bottom: 0; }
.rg-mb-4 { margin-bottom: var(--rg-space-4); }
.rg-mb-8 { margin-bottom: var(--rg-space-8); }

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .rg-header,
    .rg-footer,
    .rg-sidebar,
    .rg-nav,
    .rg-mobile-toggle {
        display: none !important;
    }
    
    .rg-article {
        max-width: 100%;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
    }
}