/* ============================================
   ZenRead — Layout (Minimalist Style)
   Extremely clean, content-focused, Medium/Notion style
   ============================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--zen-font-body);
    background: var(--zen-bg);
    color: var(--zen-text);
    line-height: var(--zen-leading-relaxed);
    min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
::selection { background: var(--zen-accent-muted); color: var(--zen-accent); }

.zen-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: calc(var(--zen-z-sticky) + 1);
    width: 0;
    height: 3px;
    background: var(--zen-accent);
    transition: width 80ms linear;
}

/* ══════════════════════════════════════
   TOP NAVBAR (Clean, white)
   ══════════════════════════════════════ */
.zen-navbar {
    position: sticky; top: 0;
    z-index: var(--zen-z-sticky);
    background: var(--zen-surface);
    border-bottom: 1px solid var(--zen-border);
    height: 72px;
    display: flex; align-items: center;
}
.zen-navbar-inner {
    width: 100%;
    max-width: var(--zen-layout-width);
    margin: 0 auto;
    padding: 0 var(--zen-space-xl);
    display: flex;
    align-items: center;
    gap: 28px;
}

/* Brand */
.zen-navbar-brand {
    display: flex; align-items: center; gap: 8px;
    font-family: var(--zen-font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--zen-text);
    letter-spacing: -0.03em;
    flex-shrink: 0;
}
.zen-navbar-logo {
    height: 64px;
    width: auto;
    display: block;
}
.zen-navbar-brand-icon {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
}
.zen-navbar-brand-icon svg { width: 100%; height: 100%; }

/* Nav Links */
.zen-navbar-nav {
    display: flex; align-items: center; gap: var(--zen-space-lg);
    list-style: none;
    flex: 1;
}
.zen-navbar-link {
    font-size: var(--zen-text-sm);
    font-weight: 500;
    color: var(--zen-text-secondary);
    transition: all 0.3s ease;
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 0;
    position: relative;
    white-space: nowrap;
}
.zen-navbar-link:hover { color: var(--zen-text); }
.zen-navbar-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--zen-accent);
    transition: width 0.3s ease;
}
.zen-navbar-link:hover::after {
    width: 100%;
    opacity: 0.3;
}
.zen-navbar-link.is-active { color: var(--zen-text); font-weight: 600; }
.zen-navbar-link.is-active::after {
    width: 100%;
    opacity: 1;
}

/* Right side */
.zen-navbar-right {
    display: flex; align-items: center; gap: var(--zen-space-md);
    margin-left: auto;
}

.zen-navbar-reading {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    max-width: min(320px, 28vw);
    min-width: 0;
    padding: 10px 14px;
    border: 1px solid rgba(245, 166, 35, 0.22);
    border-radius: var(--zen-radius-pill);
    background: linear-gradient(180deg, rgba(255, 248, 229, 0.96), rgba(255, 244, 214, 0.88));
    color: var(--zen-text);
    box-shadow: var(--zen-shadow-sm);
    flex-shrink: 0;
}

.zen-navbar-reading-label {
    color: var(--zen-text-muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    white-space: nowrap;
}

.zen-navbar-reading-title {
    overflow: hidden;
    color: var(--zen-text);
    font-size: 13px;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.zen-navbar-search {
    position: relative;
}
.zen-navbar-search-icon {
    position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
    width: 16px; height: 16px; stroke: var(--zen-text-muted); stroke-width: 1.5px; fill: none;
    pointer-events: none;
}
.zen-navbar-search-input {
    padding: 10px 16px 10px 40px;
    width: 240px;
    background: var(--zen-surface-hover);
    border: 1px solid transparent;
    border-radius: var(--zen-radius-pill);
    font-family: var(--zen-font-body);
    font-size: var(--zen-text-sm);
    color: var(--zen-text);
    outline: none;
    transition: all 0.2s;
}
.zen-navbar-search-input:focus { width: 300px; background: var(--zen-surface); border-color: var(--zen-border); box-shadow: var(--zen-shadow-sm); }
.zen-navbar-search-input::placeholder { color: var(--zen-text-muted); }

/* User avatar */
.zen-navbar-avatar {
    width: 36px; height: 36px;
    background: var(--zen-surface-hover);
    color: var(--zen-text);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: var(--zen-text-sm); font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    border: 1px solid var(--zen-border);
}
.zen-navbar-avatar:hover { background: var(--zen-surface); box-shadow: var(--zen-shadow-sm); }

/* Login Button */
.zen-navbar-login {
    padding: 10px 20px;
    background: var(--zen-accent);
    color: var(--zen-text);
    border-radius: var(--zen-radius-pill);
    font-size: var(--zen-text-sm); font-weight: 600;
    transition: all 0.3s;
    display: inline-flex; align-items: center; gap: 6px;
}
.zen-navbar-login:hover { background: var(--zen-text); color: var(--zen-accent); box-shadow: var(--zen-shadow-md); transform: translateY(-1px); }

/* ══════════════════════════════════════
   MAIN CONTENT
   ══════════════════════════════════════ */
.zen-main {
    min-height: calc(100vh - 72px - 150px);
}

/* Container */
.zen-container {
    max-width: var(--zen-layout-width);
    margin: 0 auto;
    padding: 0 var(--zen-space-xl);
}

/* Section */
.zen-section {
    padding: var(--zen-space-2xl) 0;
}
.zen-section-border {
    border-bottom: 1px solid var(--zen-border);
}

/* ══════════════════════════════════════
   HERO (Minimalist)
   ══════════════════════════════════════ */
.zen-hero {
    padding: 48px 0 56px;
    background: var(--zen-surface);
    text-align: center;
    border-bottom: 1px solid var(--zen-border);
}
.zen-hero-card {
    min-height: 420px;
    position: relative;
    overflow: hidden;
    background: url('/images/Banner.jpg?v=1') center/cover no-repeat;
    border: 1px solid var(--zen-border);
    border-radius: var(--zen-radius-xl);
    box-shadow: var(--zen-shadow-xl);
}
.zen-hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(to right, rgba(253,253,254,0) 0%, rgba(253,253,254,0) 35%, rgba(253,253,254,0.8) 60%, rgba(253,253,254,0.95) 100%);
}
.zen-hero-content {
    min-height: 420px;
    position: relative;
    z-index: 2;
    display: flex;
}
.zen-hero-spacer,
.zen-hero-copy {
    flex: 1;
}
.zen-hero-copy {
    max-width: 50%;
    padding: 52px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.zen-hero h1,
.zen-hero-copy h1 {
    font-family: var(--zen-font-heading);
    font-size: var(--zen-text-5xl);
    font-weight: 700;
    color: var(--zen-text);
    line-height: 1.1;
    margin-bottom: var(--zen-space-lg);
    letter-spacing: -0.04em;
    max-width: 800px;
    margin-left: auto; margin-right: auto;
}
.zen-hero p,
.zen-hero-copy p {
    font-size: var(--zen-text-lg);
    font-weight: 500;
    color: var(--zen-text);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto 40px;
}
.zen-home-eyebrow {
    display: inline-flex;
    margin-bottom: 8px;
    color: var(--zen-text-muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.zen-home-hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}
.zen-hero-cta {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 18px 36px;
    background: var(--zen-accent);
    color: var(--zen-text);
    border-radius: var(--zen-radius-pill);
    font-size: var(--zen-text-base);
    font-weight: 600;
    transition: all 0.3s;
}
.zen-hero-cta:hover { background: var(--zen-text); color: var(--zen-accent); transform: translateY(-2px); box-shadow: var(--zen-shadow-lg); }

.zen-home-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--zen-space-md);
    margin-top: var(--zen-space-lg);
}
.zen-home-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px 18px;
    text-align: left;
    background: var(--zen-surface);
    border: 1px solid var(--zen-border);
    border-radius: var(--zen-radius-lg);
    box-shadow: var(--zen-shadow-sm);
}
.zen-home-stat-value {
    font-family: var(--zen-font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}
.zen-home-stat-label {
    color: var(--zen-text-muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.zen-home-section-lead {
    max-width: 560px;
    margin-top: 6px;
    color: var(--zen-text-secondary);
    font-size: var(--zen-text-sm);
}

.zen-home-continue-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--zen-space-lg);
}
.zen-home-continue-card {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 16px;
    padding: 14px;
    background: var(--zen-surface);
    border: 1px solid var(--zen-border);
    border-radius: var(--zen-radius-lg);
    box-shadow: var(--zen-shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.zen-home-continue-card:hover,
.zen-home-continue-card:focus-visible {
    transform: translateY(-3px);
    border-color: var(--zen-border-hover);
    box-shadow: var(--zen-shadow-lg);
    outline: none;
}
.zen-home-continue-cover {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 220px;
    overflow: hidden;
    border-radius: var(--zen-radius-lg);
    box-shadow: var(--zen-shadow-md);
}
.zen-home-continue-cover::after,
.zen-home-spotlight-cover::after,
.zen-home-mini-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.08), rgba(0, 0, 0, 0.06));
}
.zen-home-continue-icon svg,
.zen-home-spotlight-icon svg,
.zen-home-mini-icon svg {
    width: 48px;
    height: 48px;
    position: relative;
    z-index: 1;
}
.zen-home-continue-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 1;
    min-width: 42px;
    padding: 6px 10px;
    border-radius: var(--zen-radius-pill);
    background: rgba(255, 255, 255, 0.22);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    text-align: center;
    backdrop-filter: blur(4px);
}
.zen-home-continue-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.zen-home-continue-topline {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    color: var(--zen-text-muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.zen-home-continue-body h3 {
    font-family: var(--zen-font-heading);
    font-size: 1.25rem;
    line-height: 1.15;
}
.zen-home-continue-body p {
    color: var(--zen-text-secondary);
    font-size: var(--zen-text-sm);
}
.zen-home-progress {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 2px;
}
.zen-home-progress-track {
    flex: 1;
    height: 5px;
    overflow: hidden;
    background: var(--zen-border);
    border-radius: var(--zen-radius-pill);
}
.zen-home-progress-track span {
    display: block;
    height: 100%;
    background: var(--zen-accent);
    border-radius: inherit;
}
.zen-home-progress strong {
    min-width: 90px;
    font-size: 12px;
    color: var(--zen-text);
}

.zen-home-spotlight {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
    gap: var(--zen-space-lg);
}
.zen-home-spotlight-main {
    display: grid;
    grid-template-columns: minmax(260px, 0.95fr) minmax(0, 1.05fr);
    gap: 18px;
    padding: 16px;
    background: var(--zen-surface);
    border: 1px solid var(--zen-border);
    border-radius: var(--zen-radius-lg);
    box-shadow: var(--zen-shadow-md);
    min-height: 360px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.zen-home-spotlight-main:hover,
.zen-home-spotlight-main:focus-visible {
    transform: translateY(-3px);
    border-color: var(--zen-border-hover);
    box-shadow: var(--zen-shadow-lg);
    outline: none;
}
.zen-home-spotlight-cover {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    border-radius: var(--zen-radius-lg);
    overflow: hidden;
    box-shadow: var(--zen-shadow-md);
}
.zen-home-spotlight-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
    padding: 6px 6px 6px 0;
}
.zen-home-spotlight-category {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--zen-text-muted);
}
.zen-home-spotlight-body h3 {
    font-family: var(--zen-font-heading);
    font-size: 2rem;
    line-height: 1.1;
}
.zen-home-spotlight-body p {
    color: var(--zen-text-secondary);
    font-size: var(--zen-text-lg);
}
.zen-home-spotlight-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    color: var(--zen-text-muted);
    font-size: 12px;
}
.zen-home-spotlight-note {
    color: var(--zen-text-secondary);
    font-size: var(--zen-text-sm);
    line-height: 1.6;
}
.zen-home-spotlight-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    align-self: flex-start;
    margin-top: 6px;
    padding: 10px 16px;
    border-radius: var(--zen-radius-pill);
    background: var(--zen-accent);
    color: var(--zen-text);
    font-size: var(--zen-text-sm);
    font-weight: 600;
}
.zen-home-spotlight-side {
    display: grid;
    gap: var(--zen-space-md);
}
.zen-home-mini-card {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 14px;
    padding: 12px;
    background: var(--zen-surface);
    border: 1px solid var(--zen-border);
    border-radius: var(--zen-radius-lg);
    box-shadow: var(--zen-shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.zen-home-mini-card:hover,
.zen-home-mini-card:focus-visible {
    transform: translateY(-2px);
    border-color: var(--zen-border-hover);
    box-shadow: var(--zen-shadow-md);
    outline: none;
}
.zen-home-mini-cover {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 140px;
    overflow: hidden;
    border-radius: var(--zen-radius-lg);
}
.zen-home-mini-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
}
.zen-home-mini-body span {
    color: var(--zen-text-muted);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.zen-home-mini-body h4 {
    font-family: var(--zen-font-heading);
    font-size: 1.05rem;
    line-height: 1.15;
}
.zen-home-mini-body p,
.zen-home-mini-body div {
    color: var(--zen-text-secondary);
    font-size: var(--zen-text-sm);
}

/* ══════════════════════════════════════
   FOOTER
   ══════════════════════════════════════ */
.zen-footer {
    background: var(--zen-surface);
    border-top: 1px solid var(--zen-border);
    padding: 72px 0 24px;
    margin-top: auto;
}
.zen-footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
    gap: var(--zen-space-2xl);
    margin-bottom: var(--zen-space-2xl);
}
.zen-footer-col h4 {
    font-size: 11px;
    font-weight: 700;
    color: var(--zen-text);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--zen-space-md);
}
.zen-footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.zen-footer-col ul a {
    color: var(--zen-text-secondary);
    text-decoration: none;
    font-size: var(--zen-text-sm);
    transition: all 0.2s;
}
.zen-footer-col ul a:hover {
    color: var(--zen-accent);
}
.brand-col {
    padding-right: var(--zen-space-xl);
}
.zen-footer-logo {
    height: 72px;
    width: auto;
    margin-bottom: var(--zen-space-md);
}
.zen-footer-slogan {
    color: var(--zen-text-secondary);
    max-width: 360px;
    font-size: var(--zen-text-sm);
    line-height: 1.6;
    margin-bottom: var(--zen-space-lg);
}
.zen-footer-social {
    display: flex;
    gap: 10px;
}
.zen-footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--zen-surface-hover);
    color: var(--zen-text);
    transition: all 0.2s;
}
.zen-footer-social a:hover {
    background: var(--zen-accent);
    color: var(--zen-surface);
    transform: translateY(-2px);
}
.zen-footer-social svg {
    width: 16px;
    height: 16px;
}
.zen-footer-bottom {
    border-top: 1px solid var(--zen-border);
    padding-top: var(--zen-space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--zen-space-md);
}
.zen-footer-copy {
    font-size: var(--zen-text-sm);
    color: var(--zen-text-muted);
}

/* ══════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════ */
@media (max-width: 900px) {
    .zen-navbar-inner {
        gap: var(--zen-space-lg);
    }
    .zen-navbar-search-input {
        width: 190px;
    }
    .zen-navbar-search-input:focus {
        width: 220px;
    }
    .zen-hero-card,
    .zen-hero-content {
        min-height: 440px;
    }
    .zen-hero-overlay {
        background: linear-gradient(to bottom, rgba(253,253,254,0.1) 0%, rgba(253,253,254,0.86) 56%, rgba(253,253,254,0.96) 100%);
    }
    .zen-hero-content {
        align-items: flex-end;
    }
    .zen-hero-spacer {
        display: none;
    }
    .zen-hero-copy {
        max-width: none;
        width: 100%;
        padding: 180px 40px 48px;
    }
    .zen-home-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .zen-home-continue-grid {
        grid-template-columns: 1fr;
    }
    .zen-home-spotlight {
        grid-template-columns: 1fr;
    }
    .zen-home-spotlight-main {
        grid-template-columns: 1fr;
    }
    .zen-home-spotlight-cover {
        min-height: 260px;
    }
    .zen-home-mini-card {
        grid-template-columns: 120px minmax(0, 1fr);
    }
    .zen-footer-grid {
        grid-template-columns: 1fr;
        gap: var(--zen-space-xl);
    }
}
@media (max-width: 768px) {
    .zen-navbar { height: auto; min-height: 72px; }
    .zen-navbar-inner {
        padding: 12px var(--zen-space-md);
        gap: 18px;
        flex-wrap: wrap;
    }
    .zen-navbar-logo { height: 50px; }
    .zen-navbar-reading {
        display: none;
    }
    .zen-navbar-nav {
        order: 3;
        width: 100%;
        gap: var(--zen-space-md);
        overflow-x: auto;
        padding-bottom: 2px;
    }
    .zen-navbar-right {
        gap: var(--zen-space-sm);
        margin-left: auto;
    }
    .zen-navbar-search { display: none; }
    .zen-container { padding: 0 var(--zen-space-md); }
    .zen-main { min-height: calc(100vh - 112px - 150px); }
    .zen-hero { padding: 24px 0 48px; }
    .zen-hero-card,
    .zen-hero-content { min-height: 520px; }
    .zen-hero-card {
        border-radius: var(--zen-radius-lg);
        background-position: 30% center;
    }
    .zen-hero-copy {
        padding: 220px 24px 36px;
    }
    .zen-hero h1,
    .zen-hero-copy h1 {
        font-size: 2.6rem;
        letter-spacing: 0;
    }
    .zen-hero p,
    .zen-hero-copy p {
        font-size: var(--zen-text-base);
        margin-bottom: var(--zen-space-xl);
    }
    .zen-home-stats {
        grid-template-columns: 1fr;
    }
    .zen-home-stat {
        padding: 14px 16px;
    }
    .zen-home-continue-card,
    .zen-home-mini-card {
        grid-template-columns: 1fr;
    }
    .zen-home-continue-cover,
    .zen-home-mini-cover {
        min-height: 220px;
    }
    .zen-home-spotlight-body h3 {
        font-size: 1.6rem;
    }
    .zen-footer-logo { height: 60px; }
    .zen-footer-bottom {
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .zen-navbar-login {
        padding: 8px 10px;
        font-size: 13px;
    }
    .zen-hero-copy {
        padding-left: 18px;
        padding-right: 18px;
    }
    .zen-hero h1,
    .zen-hero-copy h1 {
        font-size: 2.25rem;
    }
    .zen-home-hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .zen-home-hero-actions .zen-hero-cta {
        width: 100%;
    }
    .zen-home-spotlight-meta {
        gap: 8px 12px;
    }
}