@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* Core Theme Variables */
:root {
    --font-primary: 'Outfit', sans-serif;
    
    /* Dark Theme (Default) */
    --bg-main: #0b0f19;
    --bg-surface: rgba(17, 24, 39, 0.7);
    --bg-card: rgba(30, 41, 59, 0.45);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(6, 182, 212, 0.4);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-primary: #06b6d4;     /* Electric Cyan */
    --color-primary-rgb: 6, 182, 212;
    --color-secondary: #6366f1;   /* Indigo */
    --color-accent: #f59e0b;      /* Gold/Amber */
    --color-success: #10b981;     /* Emerald Green */
    --color-danger: #ef4444;      /* Crimson */
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 15px 40px rgba(0, 0, 0, 0.5);
    
    --glass-blur: blur(12px);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --header-height: 80px;
}

/* Light Theme overrides */
[data-theme="light"] {
    --bg-main: #f8fafc;
    --bg-surface: rgba(255, 255, 255, 0.8);
    --bg-card: #ffffff;
    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(99, 102, 241, 0.4);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --color-primary: #4f46e5;     /* Deeper Indigo for light contrast */
    --color-primary-rgb: 79, 70, 229;
    --color-secondary: #06b6d4;
    
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 15px 40px rgba(15, 23, 42, 0.12);
}

/* Base resets */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-family: var(--font-primary);
    background-color: var(--bg-main);
    color: var(--text-primary);
    transition: background-color 0.5s ease;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    border: none;
}

/* Global Typography Elements */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-bottom: 1.5rem; position: relative; display: inline-block; }
h3 { font-size: 1.5rem; margin-bottom: 1rem; }

/* Dynamic Underline for Headings */
h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 45px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 2px;
    transition: var(--transition-smooth);
}

h2:hover::after {
    width: 80px;
}

p {
    color: var(--text-secondary);
    margin-bottom: 1.2rem;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
    border: 2px solid var(--bg-main);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Layout Utilities */
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Header & Glassmorphic Navigation */
header {
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-surface);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
    box-shadow: 0 0 15px rgba(var(--color-primary-rgb), 0.2);
    object-fit: cover;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav ul {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Theme Toggle Button */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 12px rgba(var(--color-primary-rgb), 0.25);
    transform: translateY(-2px);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: var(--text-secondary);
    transition: var(--transition-smooth);
}

.theme-toggle:hover svg {
    fill: var(--color-primary);
}

/* Day/Night icon toggle classes */
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }
.sun-icon { display: block; }
.moon-icon { display: none; }

/* Premium CTA Button */
.btn-cta {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #ffffff;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.25);
    transition: var(--transition-smooth);
}

.btn-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

/* Mobile Hamburger Menu */
.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 30px;
    cursor: pointer;
}

.mobile-nav-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

/* Footer Section */
footer {
    background-color: #05070c;
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px 0;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-col h4 {
    margin-bottom: 24px;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-col ul li a:hover {
    color: var(--color-primary);
    padding-left: 4px;
}

.footer-about p {
    font-size: 0.95rem;
    margin-top: 16px;
}

.footer-socials {
    display: flex;
    gap: 16px;
    margin-top: 20px;
}

.social-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.social-icon:hover {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.88rem;
}

/* Card layout systems */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    backdrop-filter: var(--glass-blur);
}

.glass-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

/* Badge styles */
.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-live {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
    position: relative;
    padding-left: 24px;
}

.badge-live::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background-color: var(--color-danger);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-primary {
    background: rgba(6, 182, 212, 0.15);
    color: var(--color-primary);
    border: 1px solid rgba(6, 182, 212, 0.3);
}

/* Section Header Styles */
.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 50px auto;
}

.section-header h2::after {
    left: 50%;
    transform: translateX(-50%);
}

.section-header p {
    font-size: 1.1rem;
    margin-top: 10px;
}

/* Keyframes & Animations */
@keyframes pulse {
    0% { transform: translateY(-50%) scale(0.9); opacity: 0.6; }
    50% { transform: translateY(-50%) scale(1.2); opacity: 1; }
    100% { transform: translateY(-50%) scale(0.9); opacity: 0.6; }
}

/* Multi-Column Main Layouts (Guide Pages) */
.guide-layout {
    display: grid;
    grid-template-columns: 260px 1fr 320px;
    gap: 32px;
    margin: 40px 0;
}

/* Left Sidebar Table of Contents */
.toc-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 20px);
    height: fit-content;
}

.toc-title {
    font-size: 1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.toc-list {
    list-style: none;
    border-left: 2px solid var(--border-color);
}

.toc-item {
    margin-bottom: 8px;
}

.toc-link {
    font-size: 0.95rem;
    color: var(--text-secondary);
    padding: 6px 16px;
    display: block;
    transition: var(--transition-smooth);
    border-left: 2px solid transparent;
    margin-left: -2px;
}

.toc-link:hover, .toc-link.active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
}

/* Right Sidebar Tools Widget List */
.widgets-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 20px);
    height: fit-content;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.widget-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.widget-card h4 {
    font-size: 1.05rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

/* Form Styles */
.form-group {
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(var(--color-primary-rgb), 0.2);
    outline: none;
}

/* Dynamic progress trackers */
.progress-bar-container {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    width: 0%;
    transition: width 0.5s ease-out;
}

/* Responsive Media Queries */
@media (max-width: 1100px) {
    .guide-layout {
        grid-template-columns: 220px 1fr;
    }
    .widgets-sidebar {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    h1 { font-size: 2rem; }
    h2 { font-size: 1.6rem; }
    
    .guide-layout {
        grid-template-columns: 1fr;
    }
    .toc-sidebar {
        display: none;
    }
    
    .mobile-toc-toggle-btn {
        display: flex;
    }

    .toc-sidebar {
        display: block;
        position: fixed;
        bottom: 84px;
        right: 24px;
        z-index: 97;
        background: var(--bg-surface);
        border: 1px solid var(--border-hover);
        border-radius: 16px;
        padding: 20px;
        max-width: 280px;
        width: calc(100% - 48px);
        box-shadow: var(--shadow-lg);
        backdrop-filter: var(--glass-blur);
        transform: translateY(20px) scale(0.95);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition-smooth);
    }

    .toc-sidebar.drawer-open {
        transform: translateY(0) scale(1);
        opacity: 1;
        pointer-events: auto;
    }
    
    nav {
        display: none; /* Mobile menu functionality will toggle this */
    }
    
    .mobile-nav-toggle {
        display: flex;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

/* Mobile Table of Contents Floating Toggle Button */
.mobile-toc-toggle-btn {
    display: none;
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 98;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #ffffff;
    border-radius: 30px;
    padding: 12px 24px;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.4);
    cursor: pointer;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-toc-toggle-btn:hover {
    transform: translateY(-3px) scale(1.05);
}

.mobile-toc-toggle-btn.active {
    background: var(--color-danger);
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.4);
}