/* Blog Styles v2.0 - Enhanced UI/UX for KP Astro Academy */

:root {
    --gold: #f4d03f;
    --gold-dark: #d4a012;
    --gold-glow: rgba(244, 208, 63, 0.4);
    --bg-dark: #0a0a0f;
    --bg-card: rgba(255,255,255,0.02);
    --bg-card-hover: rgba(255,255,255,0.04);
    --border: rgba(255,255,255,0.08);
    --border-gold: rgba(244, 208, 63, 0.3);
    --text: #e8e8ed;
    --text-muted: #8b8b9a;
    --text-subtle: #6b6b7a;
    --gradient-gold: linear-gradient(135deg, #f4d03f 0%, #d4a012 100%);
    --gradient-dark: linear-gradient(180deg, rgba(244,208,63,0.03) 0%, transparent 100%);
    --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
    --shadow-card-hover: 0 12px 40px rgba(0,0,0,0.5);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Blog Homepage */
.blog-home { min-height: 100vh; background: var(--bg-dark); }

/* Navigation Groups */
.nav-group {
    display: flex;
    align-items: center;
    gap: 0.35rem 0.45rem;
    flex-wrap: wrap;
    padding: 0.24rem 0.55rem;
    border: 1px solid rgba(255, 248, 247, 0.1);
    border-radius: 999px;
    background: rgba(255, 248, 247, 0.04);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.nav-group:hover {
    border-color: var(--border-gold);
    box-shadow: 0 0 20px rgba(244, 208, 63, 0.1);
}

.nav-group-label {
    color: var(--gold);
    font-size: 0.68rem;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    white-space: nowrap;
}

.nav-group-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.nav-group-links a {
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: color 0.2s ease;
}

.nav-group-links a:hover {
    color: var(--gold);
}

.nav-links a.btn-primary {
    color: #0a0a0f;
}

@media (max-width: 720px) {
    .top-nav {
        position: relative;
        min-height: auto;
        align-items: flex-start;
        flex-direction: column;
    }

    .nav-links {
        width: 100%;
        justify-content: flex-start;
    }
}

/* Reading Mode Typography */
.reading-mode {
    font-family: 'Manrope', sans-serif;
    font-size: 18px;
    line-height: 1.8;
    color: var(--text);
}

.reading-mode h1, .reading-mode h2, .reading-mode h3 {
    font-family: 'Cinzel', serif;
    color: #fff;
    margin: 32px 0 16px;
}

.reading-mode h2 {
    font-size: 1.75rem;
    position: relative;
    padding-left: 20px;
}

.reading-mode h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background: var(--gradient-gold);
    border-radius: 2px;
}

.reading-mode p { margin-bottom: 24px; }

.reading-mode blockquote {
    border-left: none;
    padding: 24px 28px;
    margin: 32px 0;
    background: linear-gradient(135deg, rgba(244,208,63,0.08) 0%, rgba(244,208,63,0.03) 100%);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    font-style: italic;
    color: var(--text-muted);
    position: relative;
}

.reading-mode blockquote::before {
    content: '"';
    font-family: 'Cinzel', serif;
    font-size: 4rem;
    color: var(--gold);
    opacity: 0.3;
    position: absolute;
    top: -10px;
    left: 16px;
    line-height: 1;
}

.reading-mode code {
    background: rgba(244, 208, 63, 0.1);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    color: var(--gold);
    font-size: 0.9em;
}

.reading-mode pre {
    background: rgba(255,255,255,0.03);
    padding: 24px;
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: 32px 0;
    border: 1px solid var(--border);
}

.reading-mode pre code {
    background: none;
    padding: 0;
    color: var(--text);
}

/* SEO & Accessibility */
article[role="main"] { max-width: 740px; margin: 0 auto; }

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-gold);
    z-index: 1000;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px var(--gold-glow);
}

/* Print Styles */
@media print {
    .top-nav, .article-actions, .cta-section, .related-section { display: none !important; }
    body { background: #fff; color: #000; }
    .article-content { color: #333; }
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(
        90deg,
        rgba(255,255,255,0.03) 25%,
        rgba(255,255,255,0.08) 50%,
        rgba(255,255,255,0.03) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Enhanced Animations */
.fade-in {
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
    animation: fadeInUp 0.5s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; }
.stagger-7 { animation-delay: 0.7s; }
.stagger-8 { animation-delay: 0.8s; }
.stagger-9 { animation-delay: 0.9s; }

/* Pulse Animation for Live Indicators */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 0 0 var(--gold-glow);
    }
    50% {
        box-shadow: 0 0 20px 5px var(--gold-glow);
    }
}

.pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

/* Shimmer Effect */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.shimmer {
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(244, 208, 63, 0.1) 50%,
        transparent 100%
    );
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

/* Card Hover Lift */
.card-lift {
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.card-lift:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

/* Focus States for Accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}

/* Glass Morphism */
.glass {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--gold) 0%, #fff 50%, var(--gold) 100%);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Badge Styles */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-muted);
    transition: all 0.2s ease;
}

.badge:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-gold);
    color: var(--gold);
}

.badge-featured {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
    color: var(--bg-dark);
    border: none;
}

/* Divider Styles */
.divider {
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--border) 20%,
        var(--border-gold) 50%,
        var(--border) 80%,
        transparent 100%
    );
    margin: 40px 0;
}

/* Icon Container */
.icon-container {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--gold);
    transition: all 0.3s ease;
}

.icon-container:hover {
    background: rgba(244, 208, 63, 0.1);
    border-color: var(--border-gold);
    transform: scale(1.05);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-subtle);
}