/* =====================================================
   CODING DROP — BLOG STYLESHEET
   ===================================================== */

/* ---- DARK THEME (Default) ---- */
:root,
[data-theme="dark"] {
    --bg-primary: #0a0d13;
    --bg-secondary: #0f1319;
    --bg-card: rgba(22, 27, 38, 0.75);
    --bg-glass: rgba(255, 255, 255, 0.04);
    --bg-header: rgba(10, 13, 19, 0.88);
    --bg-search-overlay: rgba(10, 13, 19, 0.96);
    --bg-footer: rgba(7, 9, 14, 0.85);
    --bg-code-window: rgba(15, 20, 30, 0.92);
    --bg-code-header: rgba(255, 255, 255, 0.03);

    --accent-cyan: #58e6c8;
    --accent-purple: #a78bfa;
    --accent-blue: #38bdf8;
    --accent-pink: #f472b6;
    --accent-orange: #fb923c;
    --accent-green: #4ade80;

    --gradient-1: linear-gradient(135deg, #58e6c8, #a78bfa);
    --gradient-2: linear-gradient(135deg, #38bdf8, #818cf8);
    --gradient-3: linear-gradient(135deg, #f472b6, #fb923c);

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --text-code: #e6edf3;

    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(88, 230, 200, 0.3);

    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 40px rgba(88, 230, 200, 0.12);

    --orb-opacity: 0.12;
    --tag-bg: rgba(255, 255, 255, 0.05);
    --tag-border: rgba(255, 255, 255, 0.08);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- LIGHT THEME ---- */
[data-theme="light"] {
    --bg-primary: #f4f6fb;
    --bg-secondary: #eaecf4;
    --bg-card: rgba(255, 255, 255, 0.92);
    --bg-glass: rgba(0, 0, 0, 0.03);
    --bg-header: rgba(244, 246, 251, 0.92);
    --bg-search-overlay: rgba(244, 246, 251, 0.97);
    --bg-footer: rgba(228, 232, 244, 0.9);
    --bg-code-window: rgba(25, 30, 50, 0.96);
    --bg-code-header: rgba(0, 0, 0, 0.06);

    --accent-cyan: #0ea5a0;
    --accent-purple: #7c3aed;
    --accent-blue: #0284c7;
    --accent-pink: #db2777;
    --accent-orange: #ea580c;
    --accent-green: #16a34a;

    --gradient-1: linear-gradient(135deg, #0ea5a0, #7c3aed);
    --gradient-2: linear-gradient(135deg, #0284c7, #6366f1);
    --gradient-3: linear-gradient(135deg, #db2777, #ea580c);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-code: #e6edf3;

    --border: rgba(0, 0, 0, 0.09);
    --border-hover: rgba(14, 165, 160, 0.35);

    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(14, 165, 160, 0.1);

    --orb-opacity: 0.07;
    --tag-bg: rgba(0, 0, 0, 0.04);
    --tag-border: rgba(0, 0, 0, 0.09);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Animated Background ---- */
.bg-mesh {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.mesh-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: var(--orb-opacity);
    animation: orbFloat 12s ease-in-out infinite;
}

.orb-1 {
    width: 600px; height: 600px;
    background: radial-gradient(circle, #58e6c8, transparent 70%);
    top: -200px; left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, #a78bfa, transparent 70%);
    top: 30%; right: -150px;
    animation-delay: -4s;
}

.orb-3 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, #38bdf8, transparent 70%);
    bottom: -100px; left: 40%;
    animation-delay: -8s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -40px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ---- Reading Progress Bar ---- */
.reading-progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px;
    width: 0%;
    background: var(--gradient-1);
    z-index: 9999;
    transition: width 0.1s linear;
    border-radius: 0 2px 2px 0;
}

/* ---- HEADER ---- */
.blog-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-header);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.blog-header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.back-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.back-link:hover {
    color: var(--accent-cyan);
    border-color: var(--border-hover);
    background: rgba(88, 230, 200, 0.05);
}

.blog-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    transition: var(--transition);
}

.blog-logo i {
    color: var(--accent-cyan);
    font-size: 1.1rem;
}

.blog-logo span { color: var(--text-primary); }
.blog-logo em {
    font-style: normal;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-logo:hover { opacity: 0.85; transform: translateX(-2px); }

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-toggle-btn {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}

.search-toggle-btn:hover {
    color: var(--accent-cyan);
    border-color: var(--border-hover);
    background: rgba(88, 230, 200, 0.08);
}

.header-cta {
    padding: 9px 20px;
    background: var(--gradient-1);
    color: #0a0d13;
    font-weight: 700;
    font-size: 0.85rem;
    border-radius: 50px;
    transition: var(--transition);
    white-space: nowrap;
}

.header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(88, 230, 200, 0.3);
}

/* ---- Search Overlay ---- */
.search-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 999;
    background: var(--bg-search-overlay);
    backdrop-filter: blur(20px);
    padding: 100px 24px 24px;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    animation: fadeIn 0.2s ease;
}

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

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

.search-box {
    width: 100%;
    max-width: 640px;
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-lg);
    padding: 14px 20px;
    box-shadow: var(--shadow-glow);
}

.search-icon { color: var(--accent-cyan); font-size: 1rem; flex-shrink: 0; }

#search-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-family: var(--font-body);
}

#search-input::placeholder { color: var(--text-muted); }

#search-close-btn {
    color: var(--text-muted);
    font-size: 1rem;
    padding: 4px;
    transition: var(--transition);
}

#search-close-btn:hover { color: var(--accent-cyan); }

.search-results {
    width: 100%;
    max-width: 640px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 60vh;
    overflow-y: auto;
}

.search-result-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.search-result-item:hover {
    border-color: var(--border-hover);
    background: rgba(88, 230, 200, 0.05);
}

.search-result-item .sri-cat {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 3px 8px;
    border-radius: 4px;
    background: rgba(88, 230, 200, 0.1);
    color: var(--accent-cyan);
    flex-shrink: 0;
    margin-top: 2px;
}

.search-result-item h4 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 3px;
}

.search-result-item p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.search-no-results {
    text-align: center;
    color: var(--text-muted);
    padding: 40px;
    font-size: 0.95rem;
}

/* ---- HERO ---- */
.blog-hero {
    padding: 80px 24px 60px;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(88, 230, 200, 0.1);
    border: 1px solid rgba(88, 230, 200, 0.2);
    color: var(--accent-cyan);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 6px 14px;
    border-radius: 50px;
    margin-bottom: 24px;
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 18px;
    color: var(--text-primary);
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 36px;
    max-width: 500px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

.stat-item { text-align: center; }

.stat-num {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* ---- Hero Code Block ---- */
.hero-code-block { position: relative; }

.code-window {
    background: var(--bg-code-window);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card), var(--shadow-glow);
    position: relative;
    animation: codeFloat 6s ease-in-out infinite;
}

@keyframes codeFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.code-window::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(88, 230, 200, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.code-window-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-code-header);
    border-bottom: 1px solid var(--border);
}

.code-window-header .dot {
    width: 12px; height: 12px;
    border-radius: 50%;
}

.code-window-header .dot.red { background: #ff5f57; }
.code-window-header .dot.yellow { background: #ffbd2e; }
.code-window-header .dot.green { background: #28c840; }

.code-file-name {
    margin-left: 8px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
}

.code-snippet {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.7;
    padding: 20px 24px;
    overflow-x: auto;
    white-space: pre;
    color: var(--text-code);
}

.c-kw { color: #ff7b72; }
.c-cls { color: #ffa657; }
.c-tp { color: #79c0ff; }
.c-str { color: #a5d6ff; }
.c-fn { color: #d2a8ff; }
.c-op { color: #8b949e; }

/* ---- FEATURED SECTION ---- */
.featured-section {
    padding: 0 0 60px;
}

.featured-post {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 40px;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    align-items: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.featured-post::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gradient-1);
}

.featured-post:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.featured-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(88, 230, 200, 0.12);
    border: 1px solid rgba(88, 230, 200, 0.25);
    color: var(--accent-cyan);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 5px 12px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.featured-post-left h2 {
    font-family: var(--font-heading);
    font-size: 1.7rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
    color: var(--text-primary);
    transition: var(--transition);
}

.featured-post:hover .featured-post-left h2 { color: var(--accent-cyan); }

.featured-post-left p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.featured-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.featured-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.featured-meta i { color: var(--accent-cyan); font-size: 0.75rem; }

.read-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    padding: 12px 24px;
    background: var(--gradient-1);
    color: #0a0d13;
    font-weight: 700;
    font-size: 0.88rem;
    border-radius: 50px;
    transition: var(--transition);
}

.read-btn:hover {
    transform: translateX(4px);
    box-shadow: 0 6px 24px rgba(88, 230, 200, 0.3);
}

.featured-illustration {
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(88, 230, 200, 0.08), rgba(167, 139, 250, 0.08));
    border: 1px solid var(--border);
    height: 260px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

.featured-illustration::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(88, 230, 200, 0.06), transparent 60%);
}

.fi-icon {
    font-size: 4rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.08); opacity: 0.85; }
}

.fi-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* ---- FILTERS BAR ---- */
.blog-main {
    padding-bottom: 80px;
}

.filters-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.filter-label i { color: var(--accent-cyan); }

.category-pills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.pill {
    padding: 7px 16px;
    border-radius: 50px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 500;
    transition: var(--transition);
    font-family: var(--font-body);
}

.pill:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.pill.active {
    background: rgba(88, 230, 200, 0.12);
    border-color: rgba(88, 230, 200, 0.4);
    color: var(--accent-cyan);
    font-weight: 600;
}

.results-info {
    margin-bottom: 24px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

#results-count strong { color: var(--text-secondary); }

/* ---- BLOG GRID ---- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ---- BLOG CARD ---- */
.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    animation: cardAppear 0.4s ease forwards;
    opacity: 0;
    transform: translateY(16px);
}

@keyframes cardAppear {
    to { opacity: 1; transform: translateY(0); }
}

.blog-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-card), 0 0 40px rgba(88, 230, 200, 0.08);
}

.card-top {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.card-top-icon {
    font-size: 3rem;
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.blog-card:hover .card-top-icon {
    transform: scale(1.1);
}

.card-top::after {
    content: '';
    position: absolute;
    inset: 0;
    background: inherit;
    opacity: 0;
    transition: var(--transition);
}

.card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-cat {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    margin-bottom: 10px;
    display: inline-block;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.35;
    color: var(--text-primary);
    margin-bottom: 10px;
    transition: var(--transition);
}

.blog-card:hover .card-title { color: var(--accent-cyan); }

.card-excerpt {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.tag {
    font-size: 0.7rem;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 4px;
    background: var(--tag-bg);
    border: 1px solid var(--tag-border);
    color: var(--text-muted);
    font-family: var(--font-mono);
    transition: var(--transition);
}

.tag:hover {
    color: var(--text-secondary);
    border-color: var(--border-hover);
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    font-size: 0.78rem;
    color: var(--text-muted);
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 14px;
}

.card-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.card-meta i { font-size: 0.7rem; }

.card-read-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 0.8rem;
    transition: var(--transition);
}

.card-read-btn i { font-size: 0.75rem; transition: var(--transition); }

.blog-card:hover .card-read-btn i { transform: translateX(4px); }

/* ---- Category Colors ---- */
.cat-architecture  { color: var(--accent-cyan); }
.cat-performance   { color: var(--accent-orange); }
.cat-frontend      { color: var(--accent-blue); }
.cat-backend       { color: var(--accent-purple); }
.cat-database      { color: var(--accent-green); }
.cat-devops        { color: var(--accent-pink); }

.bg-architecture   { background: linear-gradient(135deg, rgba(88, 230, 200, 0.12), rgba(88, 230, 200, 0.04)); }
.bg-performance    { background: linear-gradient(135deg, rgba(251, 146, 60, 0.12), rgba(251, 146, 60, 0.04)); }
.bg-frontend       { background: linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(56, 189, 248, 0.04)); }
.bg-backend        { background: linear-gradient(135deg, rgba(167, 139, 250, 0.12), rgba(167, 139, 250, 0.04)); }
.bg-database       { background: linear-gradient(135deg, rgba(74, 222, 128, 0.12), rgba(74, 222, 128, 0.04)); }
.bg-devops         { background: linear-gradient(135deg, rgba(244, 114, 182, 0.12), rgba(244, 114, 182, 0.04)); }

/* ---- EMPTY STATE ---- */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state p { font-size: 0.9rem; margin-bottom: 20px; }

.btn-reset {
    padding: 10px 24px;
    border: 1px solid var(--border-hover);
    border-radius: 50px;
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 0.88rem;
    transition: var(--transition);
    background: rgba(88, 230, 200, 0.05);
    font-family: var(--font-body);
}

.btn-reset:hover { background: rgba(88, 230, 200, 0.12); }

/* ---- NEWSLETTER ---- */
.newsletter-section {
    padding: 0 0 80px;
}

.newsletter-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 24px 32px;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.newsletter-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gradient-2);
}

.newsletter-icon {
    width: 60px; height: 60px;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(129, 140, 248, 0.15));
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--accent-blue);
}

.newsletter-text h2 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.newsletter-text p {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.newsletter-form {
    display: flex;
    gap: 10px;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-body);
    outline: none;
    transition: var(--transition);
    min-width: 220px;
}

.newsletter-form input:focus { border-color: var(--border-hover); }
.newsletter-form input::placeholder { color: var(--text-muted); }

.newsletter-form button {
    padding: 12px 22px;
    background: var(--gradient-2);
    color: #fff;
    font-weight: 700;
    font-size: 0.88rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    font-family: var(--font-body);
    white-space: nowrap;
}

.newsletter-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56, 189, 248, 0.3);
}

.newsletter-success {
    display: none;
    grid-column: 1 / -1;
    text-align: center;
    color: var(--accent-green);
    font-weight: 600;
    font-size: 0.95rem;
}

.newsletter-success i { margin-right: 8px; }

/* ---- FOOTER ---- */
.blog-footer {
    background: var(--bg-footer);
    border-top: 1px solid var(--border);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .blog-logo {
    font-size: 1.2rem;
    margin-bottom: 14px;
    display: inline-flex;
}

.footer-brand p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 300px;
    margin-bottom: 20px;
}

.footer-socials {
    display: flex;
    gap: 10px;
}

.footer-socials a {
    width: 38px; height: 38px;
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: var(--transition);
}

.footer-socials a:hover {
    border-color: var(--border-hover);
    color: var(--accent-cyan);
    background: rgba(88, 230, 200, 0.06);
}

.footer-links h4 {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links ul li a {
    font-size: 0.88rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.footer-links ul li a:hover { color: var(--accent-cyan); padding-left: 4px; }

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ---- SCROLL TOP ---- */
.scroll-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 500;
    width: 44px; height: 44px;
    background: var(--gradient-1);
    border-radius: 50%;
    color: #0a0d13;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(88, 230, 200, 0.3);
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: var(--transition);
}

.scroll-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.scroll-top:hover { transform: translateY(-3px) scale(1.05); }

/* ---- GLASS CARD ---- */
.glass-card {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
    .blog-hero {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 60px 24px 40px;
    }

    .hero-code-block { max-width: 520px; }

    .blog-grid { grid-template-columns: repeat(2, 1fr); }

    .featured-post { grid-template-columns: 1fr; gap: 24px; }

    .newsletter-card {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .newsletter-icon { margin: 0 auto; }
    .newsletter-form { justify-content: center; flex-wrap: wrap; }

    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    .blog-grid { grid-template-columns: 1fr; }

    .header-inner { padding: 0 16px; }
    .back-link span { display: none; }

    .hero-content h1 { font-size: 1.75rem; }

    .hero-stats { gap: 16px; }
    .stat-num { font-size: 1.3rem; }

    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

    .featured-post { padding: 24px; }

    .newsletter-card { padding: 32px 24px; }
    .newsletter-form input { min-width: 100%; }
    .newsletter-form { flex-direction: column; align-items: stretch; }

    .filters-bar { flex-direction: column; align-items: flex-start; }
}


@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .blog-hero { padding: 40px 16px 30px; }
    .hero-stats { flex-wrap: wrap; justify-content: center; }
}

/* ============================================================
   THEME TOGGLE BUTTON
   ============================================================ */

/* Smooth body transition for theme switch */
body {
    transition: background-color 0.4s ease, color 0.4s ease;
}

.theme-toggle-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.theme-toggle-btn:hover {
    border-color: var(--border-hover);
    color: var(--accent-cyan);
    background: rgba(88, 230, 200, 0.08);
    transform: rotate(15deg);
}

/* Icon swap */
.theme-toggle-btn .icon-sun,
.theme-toggle-btn .icon-moon {
    position: absolute;
    transition: transform 0.4s ease, opacity 0.3s ease;
}

/* Dark mode: show moon */
[data-theme="dark"] .theme-toggle-btn .icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }
[data-theme="dark"] .theme-toggle-btn .icon-sun  { opacity: 0; transform: rotate(90deg) scale(0.5); }

/* Light mode: show sun */
[data-theme="light"] .theme-toggle-btn .icon-sun  { opacity: 1; transform: rotate(0deg) scale(1); }
[data-theme="light"] .theme-toggle-btn .icon-moon { opacity: 0; transform: rotate(-90deg) scale(0.5); }

/* ============================================================
   LIGHT THEME SPECIFIC OVERRIDES
   ============================================================ */

/* Card backgrounds have shadows not just borders in light mode */
[data-theme="light"] .blog-card {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
}

[data-theme="light"] .blog-card:hover {
    box-shadow: var(--shadow-card), 0 0 30px rgba(14, 165, 160, 0.1);
}

[data-theme="light"] .featured-post {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .glass-card {
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 2px 16px rgba(0,0,0,0.07);
}

/* Tighter orb colors for light mode */
[data-theme="light"] .orb-1 {
    background: radial-gradient(circle, #0ea5a0, transparent 70%);
}
[data-theme="light"] .orb-2 {
    background: radial-gradient(circle, #7c3aed, transparent 70%);
}
[data-theme="light"] .orb-3 {
    background: radial-gradient(circle, #0284c7, transparent 70%);
}

/* Category backgrounds lighter in light mode */
[data-theme="light"] .bg-architecture { background: linear-gradient(135deg, rgba(14, 165, 160, 0.1), rgba(14, 165, 160, 0.04)); }
[data-theme="light"] .bg-performance  { background: linear-gradient(135deg, rgba(234, 88, 12, 0.1), rgba(234, 88, 12, 0.04)); }
[data-theme="light"] .bg-frontend     { background: linear-gradient(135deg, rgba(2, 132, 199, 0.1), rgba(2, 132, 199, 0.04)); }
[data-theme="light"] .bg-backend      { background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(124, 58, 237, 0.04)); }
[data-theme="light"] .bg-database     { background: linear-gradient(135deg, rgba(22, 163, 74, 0.1), rgba(22, 163, 74, 0.04)); }
[data-theme="light"] .bg-devops       { background: linear-gradient(135deg, rgba(219, 39, 119, 0.1), rgba(219, 39, 119, 0.04)); }

/* Accent colors in light mode */
[data-theme="light"] .cat-architecture { color: #0ea5a0; }
[data-theme="light"] .cat-performance  { color: #ea580c; }
[data-theme="light"] .cat-frontend     { color: #0284c7; }
[data-theme="light"] .cat-backend      { color: #7c3aed; }
[data-theme="light"] .cat-database     { color: #16a34a; }
[data-theme="light"] .cat-devops       { color: #db2777; }

/* Scroll top button */
[data-theme="light"] .scroll-top {
    box-shadow: 0 4px 20px rgba(14, 165, 160, 0.25);
}

/* Light mode — header scrolled shadow softer */
[data-theme="light"] .blog-header.scrolled {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

/* Search overlay in light mode */
[data-theme="light"] .search-result-item:hover {
    background: rgba(14, 165, 160, 0.04);
}

/* Newsletter section light adjustments */
[data-theme="light"] .newsletter-card {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}