/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark theme (default) */
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a25;
    --bg-input: #1a1a25;
    --bg-overlay: rgba(10, 10, 15, 0.95);
    --text: #e8e6e3;
    --text-muted: #8a8a9a;
    --accent: #6c63ff;
    --accent-light: #8b83ff;
    --accent-glow: rgba(108, 99, 255, 0.15);
    --border: rgba(255, 255, 255, 0.06);
    --radius: 16px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --shadow: rgba(0, 0, 0, 0.4);
    --code-bg: #1e1e2e;
    --blockquote-border: rgba(108, 99, 255, 0.3);
    /* Safe area for notched devices */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
}

/* Light theme removed - dark only */

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color 0.4s, color 0.4s;
    /* Safe area padding for notched phones */
    padding-left: var(--safe-left);
    padding-right: var(--safe-right);
}

a {
    color: inherit;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

/* Touch-friendly: min 44px tap targets */
button, a, input, textarea, select {
    min-height: 44px;
}

img, video {
    max-width: 100%;
    height: auto;
}

/* ===== PARTICLE CANVAS ===== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== NAV ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.2rem 2rem;
    padding-top: calc(1.2rem + var(--safe-top));
    transition: var(--transition);
    backdrop-filter: blur(0px);
}

.nav.scrolled {
    background: color-mix(in srgb, var(--bg) 75%, transparent);
    backdrop-filter: blur(24px) saturate(1.4);
    -webkit-backdrop-filter: blur(24px) saturate(1.4);
    border-bottom: 1px solid var(--border);
    padding: 0.8rem 2rem;
    padding-top: calc(0.8rem + var(--safe-top));
}

/* Immersive frosted nav on post pages */
.nav.immersive {
    background: linear-gradient(180deg, 
        color-mix(in srgb, var(--bg) 90%, transparent) 0%,
        color-mix(in srgb, var(--bg) 60%, transparent) 70%,
        transparent 100%
    );
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
    border-bottom: none;
    transition: all 0.5s ease;
}

.nav.immersive.scrolled {
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    backdrop-filter: blur(28px) saturate(1.6);
    -webkit-backdrop-filter: blur(28px) saturate(1.6);
    border-bottom: 1px solid color-mix(in srgb, var(--accent) 15%, transparent);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}


}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 600;
    font-size: 1.1rem;
    z-index: 101;
}

.logo-icon {
    font-size: 1.4rem;
    color: var(--accent);
    animation: logoSpin 8s linear infinite;
}

@keyframes logoSpin {
    0%, 100% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.1); }
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 0.9rem;
    color: var(--text-muted);
    position: relative;
    padding: 0.3rem 0;
    transition: color 0.3s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
    border-radius: 1px;
}

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

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

/* ===== HAMBURGER MENU ===== */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 101;
    min-height: auto;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.mobile-nav {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99;
    background: var(--bg-overlay);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-nav.active {
    display: flex;
    opacity: 1;
}

.mobile-nav .nav-link {
    font-size: 1.3rem;
    font-weight: 600;
    padding: 0.8rem 1.5rem;
}

.mobile-nav .nav-link::after {
    bottom: 5px;
    height: 3px;
}

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh; /* dynamic viewport height for mobile */
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.hero-content {
    text-align: center;
    padding: 2rem;
}

.hero-tag {
    font-size: 0.85rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.2s forwards;
}

.hero-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(2.5rem, 8vw, 5.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-title .line {
    display: block;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
}

.hero-title .line:nth-child(1) { animation-delay: 0.4s; }
.hero-title .line:nth-child(2) { animation-delay: 0.6s; }

.hero-title .accent {
    background: linear-gradient(135deg, var(--accent), #ff6b9d, #ffa751);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: fadeUp 0.8s ease 0.6s forwards, gradientMove 6s ease infinite;
}

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

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.8s forwards;
    letter-spacing: 2px;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 2rem;
    background: transparent;
    border: 1px solid var(--accent);
    border-radius: 50px;
    color: var(--accent);
    font-size: 0.95rem;
    transition: var(--transition);
    opacity: 0;
    animation: fadeUp 0.8s ease 1s forwards;
}

.hero-btn:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.hero-btn svg {
    transition: transform 0.3s;
}

.hero-btn:hover svg {
    transform: translateX(4px);
}

.hero-scroll {
    position: absolute;
    bottom: 2.5rem;
    bottom: calc(2.5rem + var(--safe-bottom));
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    opacity: 0;
    animation: fadeIn 1s ease 1.5s forwards;
}

.hero-scroll span {
    font-size: 0.7rem;
    letter-spacing: 3px;
    color: var(--text-muted);
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ===== SECTIONS ===== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    font-size: 0.75rem;
    letter-spacing: 4px;
    color: var(--accent);
    display: block;
    margin-bottom: 0.8rem;
}

.section-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.2rem;
    font-weight: 700;
}

/* ===== ARTICLES ===== */
.articles {
    position: relative;
    z-index: 1;
    padding: 6rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: pointer;
    opacity: 0;
    transform: translateY(40px);
}

.card.revealed {
    opacity: 1;
    transform: translateY(0);
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(108, 99, 255, 0.2);
    box-shadow: 0 20px 60px var(--shadow), 0 0 40px var(--accent-glow);
    background: var(--bg-card-hover);
}

/* Disable hover lift on touch devices */
@media (hover: none) {
    .card:hover {
        transform: none;
        border-color: var(--border);
        box-shadow: none;
        background: var(--bg-card);
    }
    .card:active {
        transform: scale(0.98);
        background: var(--bg-card-hover);
    }
}

.card-image {
    height: 180px;
    position: relative;
    overflow: hidden;
    --hue: 220;
}

.card-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        hsl(var(--hue), 70%, 15%),
        hsl(calc(var(--hue) + 40), 60%, 10%)
    );
    transition: transform 0.6s ease;
}



.card:hover .card-gradient {
    transform: scale(1.08);
}

.card-gradient::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 40%, rgba(255,255,255,0.08) 0%, transparent 60%);
}

.card-date {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 1px;
}



.card-body {
    padding: 1.5rem;
}

.card-tag {
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 0.25rem 0.7rem;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 0.8rem;
}

.card-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.card-excerpt {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1.2rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--accent);
    transition: var(--transition);
}

.card-link svg {
    transition: transform 0.3s;
}

.card:hover .card-link svg {
    transform: translateX(4px);
}

/* ===== ABOUT ===== */
.about {
    position: relative;
    z-index: 1;
    padding: 6rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.about-inner {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: center;
}

.about-visual {
    position: relative;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--border);
    animation: circleFloat 10s ease-in-out infinite;
}

.about-circle:nth-child(1) {
    width: 280px;
    height: 280px;
    border-color: rgba(108, 99, 255, 0.2);
}

.about-circle:nth-child(2) {
    width: 200px;
    height: 200px;
    border-color: rgba(255, 107, 157, 0.15);
    animation-delay: -3s;
}

.about-circle:nth-child(3) {
    width: 120px;
    height: 120px;
    border-color: rgba(255, 167, 81, 0.15);
    animation-delay: -6s;
    background: var(--accent-glow);
}

@keyframes circleFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(10px, -15px) rotate(5deg); }
    50% { transform: translate(-5px, 10px) rotate(-3deg); }
    75% { transform: translate(8px, 5px) rotate(2deg); }
}

.about-content {
    opacity: 0;
    transform: translateX(30px);
}

.about-content.revealed {
    opacity: 1;
    transform: translateX(0);
    transition: all 0.8s ease;
}

.about-text {
    color: var(--text-muted);
    margin-bottom: 1.2rem;
    font-size: 1rem;
}

.about-stats {
    display: flex;
    gap: 2.5rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* ===== POST PAGE ===== */
.post-page {
    position: relative;
    z-index: 1;
    max-width: 760px;
    margin: 0 auto;
    padding: 7rem 2rem 4rem;
    padding-top: calc(7rem + var(--safe-top));
    animation: fadeUp 0.6s ease;
}

.post-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.post-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    transition: color 0.2s;
    margin-right: auto;
    min-height: 44px;
    padding: 0.5rem 0;
}

.post-back:hover {
    color: var(--accent);
}

.post-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.post-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(1.6rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 2.5rem;
}

.post-content {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text);
}

.post-content p {
    margin-bottom: 1.5rem;
}

.post-content h2 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.post-content h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 0.8rem;
}

.post-content blockquote {
    border-left: 3px solid var(--blockquote-border);
    padding: 0.8rem 1.2rem;
    margin: 1.5rem 0;
    color: var(--text-muted);
    background: var(--accent-glow);
    border-radius: 0 8px 8px 0;
}

.post-content code {
    font-family: 'JetBrains Mono', monospace;
    background: var(--code-bg);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9em;
    word-break: break-all;
}

.post-content pre {
    background: var(--code-bg);
    padding: 1.2rem;
    border-radius: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 1.5rem 0;
    border: 1px solid var(--border);
}

.post-content pre code {
    background: none;
    padding: 0;
    word-break: normal;
}

.post-content ul, .post-content ol {
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.post-content li {
    margin-bottom: 0.5rem;
}

.post-content img {
    max-width: 100%;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.post-content a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    word-break: break-all;
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

.post-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.post-nav {
    display: flex;
    justify-content: space-between;
}

.post-nav-link {
    color: var(--accent);
    font-size: 0.9rem;
    transition: opacity 0.2s;
}

.post-nav-link:hover {
    opacity: 0.7;
}

/* ===== FOOTER ===== */
.footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border);
    padding: 3rem 2rem;
    padding-bottom: calc(3rem + var(--safe-bottom));
    margin-top: 4rem;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--accent);
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--accent);
}

/* ===== DISCLAIMER ===== */
.disclaimer {
    max-width: 680px;
    margin: 1.5rem auto 0;
    padding: 1.2rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: left;
}

.disclaimer p {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 0.3rem;
}

.disclaimer p:last-child {
    margin-bottom: 0;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== RESPONSIVE: TABLET (768px) ===== */
@media (max-width: 768px) {
    .nav { padding-left: 1.2rem; padding-right: 1.2rem; }

    /* Show hamburger, hide desktop links */
    .hamburger { display: flex; }
    .nav-links { display: none; }

    .hero-title {
        font-size: clamp(2.2rem, 10vw, 3.5rem);
    }

    .hero-desc {
        font-size: 1rem;
        letter-spacing: 1px;
    }

    .articles {
        padding: 4rem 1.2rem;
    }

    .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .card-image {
        height: 160px;
    }

    .about {
        padding: 4rem 1.2rem;
    }

    .about-inner {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-visual {
        height: 200px;
    }

    .about-stats {
        gap: 1.5rem;
        justify-content: center;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

    .post-page {
        padding: 5.5rem 1.2rem 3rem;
        padding-top: calc(5.5rem + var(--safe-top));
    }

    .post-title {
        font-size: clamp(1.4rem, 5vw, 2rem);
    }

    .post-content {
        font-size: 1rem;
    }

    .post-content pre {
        padding: 1rem;
        font-size: 0.85rem;
        border-radius: 8px;
        margin-left: -0.2rem;
        margin-right: -0.2rem;
    }

    .footer {
        padding: 2rem 1.2rem;
        padding-bottom: calc(2rem + var(--safe-bottom));
    }

    .disclaimer {
        padding: 1rem;
    }

    .footer-links {
        gap: 1.5rem;
        flex-wrap: wrap;
    }
}

/* ===== RESPONSIVE: PHONE (480px) ===== */
@media (max-width: 480px) {
    html {
        font-size: 15px;
    }

    .nav {
        padding: 0.8rem 1rem;
        padding-top: calc(0.8rem + var(--safe-top));
    }

    .nav.scrolled {
        padding: 0.6rem 1rem;
        padding-top: calc(0.6rem + var(--safe-top));
    }

    .logo {
        font-size: 1rem;
    }

    .logo-icon {
        font-size: 1.2rem;
    }

    .hero-content {
        padding: 1.5rem;
    }

    .hero-tag {
        font-size: 0.75rem;
        letter-spacing: 3px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-desc {
        font-size: 0.9rem;
        margin-bottom: 2rem;
    }

    .hero-btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .articles {
        padding: 3rem 1rem;
    }

    .card-body {
        padding: 1.2rem;
    }

    .card-title {
        font-size: 1.1rem;
    }

    .card-excerpt {
        font-size: 0.85rem;
    }

    .about {
        padding: 3rem 1rem;
    }

    .about-visual {
        height: 160px;
    }

    .about-circle:nth-child(1) { width: 180px; height: 180px; }
    .about-circle:nth-child(2) { width: 120px; height: 120px; }
    .about-circle:nth-child(3) { width: 70px; height: 70px; }

    .about-stats {
        gap: 1rem;
    }

    .stat-num {
        font-size: 1.4rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .post-page {
        padding: 5rem 1rem 2rem;
        padding-top: calc(5rem + var(--safe-top));
    }

    .post-header {
        gap: 0.5rem;
    }

    .post-content h2 {
        font-size: 1.3rem;
    }

    .post-content h3 {
        font-size: 1.15rem;
    }

    .post-content blockquote {
        padding: 0.6rem 1rem;
    }

    .disclaimer p {
        font-size: 0.7rem;
    }
}

/* ===== RESPONSIVE: SMALL PHONE (360px) ===== */
@media (max-width: 360px) {
    html {
        font-size: 14px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .card-image {
        height: 130px;
    }

    .about-circle:nth-child(1) { width: 140px; height: 140px; }
    .about-circle:nth-child(2) { width: 100px; height: 100px; }
    .about-circle:nth-child(3) { width: 60px; height: 60px; }
}

/* ===== SELECTION ===== */
::selection {
    background: var(--accent);
    color: #fff;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(108, 99, 255, 0.3);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(108, 99, 255, 0.5);
}

/* ===== PWA / STANDALONE MODE ===== */
@media (display-mode: standalone) {
    body {
        padding-top: var(--safe-top);
    }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
}

/* ===== PRINT ===== */
@media print {
    .nav, .hero-scroll, .card-gradient, #particles, .hamburger, .mobile-nav {
        display: none !important;
    }
    body {
        background: #fff;
        color: #000;
    }
    .card {
        break-inside: avoid;
        border: 1px solid #ddd;
    }
}


/* ===== SEARCH BAR ===== */
.search-bar {
    max-width: 1100px;
    margin: 0 auto 2rem;
    padding: 0 2rem;
}

.search-input-wrap {
    position: relative;
    max-width: 480px;
    margin: 0 auto 1rem;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

#searchInput {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 2.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
    min-height: 48px;
}

#searchInput:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.search-clear {
    position: absolute;
    right: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 0.3rem;
    min-height: auto;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.search-clear:hover { background: var(--bg-card-hover); }

.tag-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.tag-filter {
    padding: 0.35rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    min-height: auto;
    font-family: inherit;
}

.tag-filter:hover, .tag-filter.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.tag-filter .count { font-size: 0.7rem; opacity: 0.7; margin-left: 0.3rem; }

.search-results { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }

.search-result-item {
    display: block;
    padding: 1.2rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 0.75rem;
    color: var(--text);
    transition: all 0.2s;
}

.search-result-item:hover { border-color: var(--accent); transform: translateY(-2px); }
.search-result-item .sr-title { font-size: 1rem; font-weight: 600; margin-bottom: 0.3rem; }
.search-result-item .sr-meta { display: flex; gap: 0.8rem; align-items: center; font-size: 0.8rem; color: var(--text-muted); }
.search-result-item .sr-excerpt { font-size: 0.85rem; color: var(--text-muted); margin-top: 0.3rem; line-height: 1.5; }
/* ===== Enhanced Search Styles ===== */
.search-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}
.search-empty-icon { font-size: 2.5rem; margin-bottom: 1rem; opacity: 0.6; }
.search-empty-hint { font-size: 0.8rem; opacity: 0.5; margin-top: 0.5rem; display: block; }

/* Keyword highlight */
mark.hl {
    background: hsla(50, 100%, 60%, 0.25);
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
    border-bottom: 2px solid hsla(50, 100%, 60%, 0.6);
}

/* Search result items - improved */
.search-result-item {
    display: flex !important;
    align-items: center;
    gap: 0;
    padding: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 0.75rem;
    color: var(--text);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
}
.search-result-item:hover {
    border-color: var(--accent);
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.sr-indicator {
    width: 5px;
    height: 100%;
    min-height: 80px;
    flex-shrink: 0;
    border-radius: 14px 0 0 14px;
}

.sr-body {
    flex: 1;
    padding: 1rem 1.2rem;
    min-width: 0;
}

.sr-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    line-height: 1.4;
}

.sr-meta {
    display: flex;
    gap: 0.6rem;
    align-items: center;
    font-size: 0.78rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.sr-score {
    font-size: 0.7rem;
    background: rgba(108, 99, 255, 0.1);
    color: var(--accent);
    padding: 0.1rem 0.45rem;
    border-radius: 10px;
    font-weight: 500;
}

.sr-excerpt {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.4rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.sr-arrow {
    flex-shrink: 0;
    padding: 0 1.2rem;
    font-size: 1.2rem;
    color: var(--text-muted);
    transition: all 0.2s;
}
.search-result-item:hover .sr-arrow {
    color: var(--accent);
    transform: translateX(4px);
}

/* Search input enhanced */
.search-input-wrap::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), hsl(260, 70%, 60%));
    border-radius: 2px;
    transition: all 0.3s;
    transform: translateX(-50%);
}
.search-input-wrap:focus-within::after {
    width: 60%;
}

#searchInput {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
#searchInput:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow), 0 4px 15px rgba(108, 99, 255, 0.1);
}

/* Keyboard hint */
.search-hint {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.72rem;
    color: var(--text-muted);
    opacity: 0.5;
    margin-top: 0.4rem;
    justify-content: center;
}
.search-hint kbd {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.1rem 0.4rem;
    font-size: 0.7rem;
    font-family: inherit;
}

/* Slide up animation */
@keyframes slideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Search count */
.search-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 1rem;
    transition: opacity 0.3s;
}

@media (max-width: 768px) {
    .search-bar { padding: 0 1rem; margin-bottom: 1.5rem; }
    .search-results { padding: 0 1rem; }
    .search-result-item .sr-body { padding: 0.8rem 1rem; }
    .sr-arrow { display: none; }
    .sr-indicator { min-height: 60px; }
}

.pagination {
    max-width: 1100px;
    margin: 2rem auto 0;
    padding: 0 2rem;
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.page-btn {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    padding: 0 0.5rem;
    min-height: auto;
}

.page-btn:hover { border-color: var(--accent); color: var(--text); }
.page-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.page-info { color: var(--text-muted); font-size: 0.8rem; text-align: center; margin-top: 0.5rem; width: 100%; }

@media (max-width: 768px) {
    .search-bar { padding: 0 1rem; margin-bottom: 1.5rem; }
    .search-results { padding: 0 1rem; }
    .pagination { padding: 0 1rem; }
    .tag-filters { gap: 0.4rem; }
    .tag-filter { font-size: 0.72rem; padding: 0.3rem 0.7rem; }
}