/* ======================================================
   science-blog.css — Episteme Community Science Blog
   Design system: Paedomorphic Scientific Editorial
   Fonts: Lora (serif) + DM Sans (sans)
   ====================================================== */

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,600;1,400&family=DM+Sans:wght@300;400;500&family=Playfair+Display:ital,wght@1,400&display=swap');

/* ── CSS Variables (global so modal outside .episteme-page also inherits) ── */
:root {
    --cream: #F7F4EE;
    --warm-white: #FDFCF9;
    --paper: #FAF8F3;
    --sage: #8BA888;
    --sage-light: #C8DBCA;
    --slate: #5C7A8C;
    --slate-light: #B8CDD6;
    --amber: #C8924A;
    --amber-light: #EDD9BC;
    --ink: #2D3A2E;
    --ink-mid: #4A5C4B;
    --ink-light: #7A8C7B;
    --sand: #E8E0D0;
    --rose-dust: #D4BDB0;
}

.episteme-page {
    font-family: 'DM Sans', sans-serif;
    color: var(--ink);
}

/* ── Page wrapper ── */
.episteme-page {
    background: var(--cream);
    min-height: 100vh;
    position: relative;
}

/* Subtle grid texture */
.episteme-page::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(var(--sand) 1px, transparent 1px),
        linear-gradient(90deg, var(--sand) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.35;
    pointer-events: none;
    z-index: 0;
}

/* ── Section label ── */
.ep-section-label {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-light);
    font-weight: 500;
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.ep-section-label::before {
    content: '';
    width: 32px;
    height: 1.5px;
    background: var(--sage);
    display: block;
    flex-shrink: 0;
}

/* ── Hero ── */
.ep-hero {
    position: relative;
    z-index: 5;
    max-width: 1280px;
    margin: 0 auto;
    padding: 60px 5vw 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: end;
}

.ep-hero-left h1 {
    font-family: 'Lora', serif;
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    font-weight: 600;
    line-height: 1.18;
    color: var(--ink);
    margin-bottom: 18px;
}

.ep-hero-left h1 em {
    font-style: italic;
    color: var(--slate);
}

.ep-hero-left p {
    font-size: 1.05rem;
    color: var(--ink-mid);
    line-height: 1.75;
    font-weight: 300;
    max-width: 440px;
}

.ep-hero-stats {
    display: flex;
    gap: 24px;
    margin-top: 36px;
    flex-wrap: wrap;
}

.ep-stat-pill {
    background: var(--warm-white);
    border: 1.5px solid var(--sand);
    border-radius: 16px;
    padding: 14px 20px;
    text-align: center;
}

.ep-stat-pill .num {
    font-family: 'Lora', serif;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1;
}

.ep-stat-pill .label {
    font-size: 0.72rem;
    color: var(--ink-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 5px;
    font-weight: 400;
}

/* Hero visual */
.ep-hero-visual {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.ep-molecule-svg {
    width: 100%;
    max-width: 340px;
    opacity: 0.85;
    animation: ep-float 6s ease-in-out infinite;
}

@keyframes ep-float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* ── Filter Bar ── */
.ep-filter-bar {
    position: relative;
    z-index: 5;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 5vw 32px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.ep-filter-btn {
    background: var(--warm-white);
    border: 1.5px solid var(--sand);
    border-radius: 100px;
    padding: 8px 20px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--ink-mid);
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.02em;
}

.ep-filter-btn:hover,
.ep-filter-btn.active {
    background: var(--ink);
    color: var(--cream);
    border-color: var(--ink);
}

.ep-filter-btn.f-ecology.active {
    background: #4A7A4A;
    border-color: #4A7A4A;
}

.ep-filter-btn.f-climate.active {
    background: #2A6A6A;
    border-color: #2A6A6A;
}

.ep-filter-btn.f-neuro.active {
    background: #7A4A7A;
    border-color: #7A4A7A;
}

.ep-filter-btn.f-physics.active {
    background: var(--slate);
    border-color: var(--slate);
}

/* ── Blog Grid ── */
.ep-blog-section {
    position: relative;
    z-index: 5;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 5vw 80px;
}

.ep-blog-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
}

/* ── Tag pills ── */
.ep-card-tag {
    display: inline-block;
    background: var(--amber-light);
    color: var(--amber);
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 5px 12px;
    border-radius: 100px;
    margin-bottom: 14px;
}

.ep-card-tag.ecology {
    background: #D4EDD4;
    color: #4A7A4A;
}

.ep-card-tag.physics {
    background: var(--slate-light);
    color: var(--slate);
}

.ep-card-tag.neuro {
    background: #E8D4E8;
    color: #7A4A7A;
}

.ep-card-tag.climate {
    background: #D4E8E8;
    color: #2A6A6A;
}

/* ── Featured card (span 7) ── */
.ep-card-featured {
    grid-column: span 7;
    background: var(--warm-white);
    border: 1.5px solid var(--sand);
    border-radius: 24px;
    overflow: hidden;
    transition: transform 0.25s, box-shadow 0.25s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.ep-card-featured:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(45, 58, 46, 0.09);
    color: inherit;
    text-decoration: none;
}

.ep-card-featured-img {
    height: 240px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ep-card-featured-img::after {
    content: '';
    position: absolute;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.4);
    right: -60px;
    top: -60px;
}

.ep-card-featured-img .ep-img-label {
    font-family: 'Lora', serif;
    font-size: 3.5rem;
    opacity: 0.25;
    user-select: none;
}

.ep-card-featured-body {
    padding: 32px;
}

.ep-card-featured-body h2 {
    font-family: 'Lora', serif;
    font-size: 1.55rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--ink);
    margin-bottom: 12px;
}

.ep-card-featured-body p {
    color: var(--ink-mid);
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 300;
    margin-bottom: 24px;
}

/* ── Card side stack (span 5) ── */
.ep-card-stack {
    grid-column: span 5;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.ep-card-small {
    background: var(--warm-white);
    border: 1.5px solid var(--sand);
    border-radius: 18px;
    padding: 20px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.ep-card-small:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(45, 58, 46, 0.08);
    color: inherit;
    text-decoration: none;
}

.ep-card-small-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.ep-icon-sage {
    background: #EAF2EA;
}

.ep-icon-slate {
    background: #E0ECF2;
}

.ep-icon-amber {
    background: #F2E8DA;
}

.ep-icon-rose {
    background: #F2E4E0;
}

.ep-card-small-body h3 {
    font-family: 'Lora', serif;
    font-size: 0.98rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--ink);
    margin-bottom: 6px;
}

.ep-card-small-body p {
    font-size: 0.82rem;
    color: var(--ink-mid);
    line-height: 1.6;
    font-weight: 300;
    margin-bottom: 0;
}

/* ── Medium cards (span 4) ── */
.ep-card-medium {
    grid-column: span 4;
    background: var(--warm-white);
    border: 1.5px solid var(--sand);
    border-radius: 20px;
    padding: 28px;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.ep-card-medium:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 32px rgba(45, 58, 46, 0.08);
    color: inherit;
    text-decoration: none;
}

.ep-card-medium h3 {
    font-family: 'Lora', serif;
    font-size: 1.12rem;
    font-weight: 600;
    line-height: 1.38;
    color: var(--ink);
    margin: 10px 0 10px;
}

.ep-card-medium p {
    font-size: 0.87rem;
    color: var(--ink-mid);
    line-height: 1.65;
    font-weight: 300;
    margin-bottom: 20px;
}

/* ── Card Meta ── */
.ep-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
}

.ep-author-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 500;
    color: white;
    flex-shrink: 0;
}

.ep-author-avatar.sm {
    width: 26px;
    height: 26px;
    font-size: 11px;
}

.ep-av-sage {
    background: #8BA888;
}

.ep-av-slate {
    background: #5C7A8C;
}

.ep-av-amber {
    background: #C8924A;
}

.ep-av-rose {
    background: #B87A7A;
}

.ep-author-info .ep-name {
    font-size: 0.83rem;
    font-weight: 500;
    color: var(--ink);
    line-height: 1.2;
}

.ep-author-info .ep-date {
    font-size: 0.72rem;
    color: var(--ink-light);
    font-weight: 300;
}

.ep-read-time {
    margin-left: auto;
    font-size: 0.72rem;
    color: var(--ink-light);
    font-weight: 300;
    white-space: nowrap;
}

/* ── Gradient image banners ── */
.ep-grad-ecology {
    background: linear-gradient(135deg, #C8DBCA 0%, #B8CDD6 100%);
}

.ep-grad-climate {
    background: linear-gradient(135deg, #B8D4D4 0%, #C8DBCA 100%);
}

.ep-grad-neuro {
    background: linear-gradient(135deg, #D4C0D4 0%, #D4BDB0 100%);
}

.ep-grad-physics {
    background: linear-gradient(135deg, #B8CDD6 0%, #C8DBCA 100%);
}

.ep-grad-bio {
    background: linear-gradient(135deg, #D4E8BC 0%, #BCDBBC 100%);
}

/* ── Load More ── */
.ep-load-more-wrap {
    position: relative;
    z-index: 5;
    text-align: center;
    padding: 0 5vw 60px;
}

.ep-btn-load-more {
    background: var(--warm-white);
    border: 1.5px solid var(--sand);
    color: var(--ink);
    border-radius: 100px;
    padding: 14px 40px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.92rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s;
    letter-spacing: 0.03em;
}

.ep-btn-load-more:hover {
    background: var(--ink);
    color: var(--cream);
    border-color: var(--ink);
    transform: translateY(-1px);
}

/* ── Submit Section ── */
.ep-submit-section {
    position: relative;
    z-index: 5;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 5vw 80px;
}

.ep-submit-card {
    background: var(--warm-white);
    border: 1.5px solid var(--sand);
    border-radius: 28px;
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.ep-submit-info {
    padding: 52px 48px;
    background: linear-gradient(145deg, var(--sage-light) 0%, var(--slate-light) 100%);
    position: relative;
    overflow: hidden;
}

.ep-submit-info::before {
    content: '⬡';
    position: absolute;
    font-size: 200px;
    color: rgba(255, 255, 255, 0.15);
    right: -40px;
    bottom: -40px;
    line-height: 1;
}

.ep-submit-info h2 {
    font-family: 'Lora', serif;
    font-size: 1.9rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.3;
    margin-bottom: 14px;
}

.ep-submit-info h2 em {
    font-style: italic;
    color: var(--slate);
}

.ep-submit-info>p {
    font-size: 0.95rem;
    color: var(--ink-mid);
    line-height: 1.75;
    font-weight: 300;
    margin-bottom: 28px;
}

.ep-guidelines {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ep-guideline {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--ink-mid);
    font-weight: 300;
    line-height: 1.5;
}

.ep-guideline::before {
    content: '○';
    color: var(--sage);
    font-size: 0.65rem;
    margin-top: 4px;
    flex-shrink: 0;
}

/* Form */
.ep-submit-form {
    padding: 52px 48px;
}

.ep-submit-form h3 {
    font-family: 'Lora', serif;
    font-size: 1.25rem;
    color: var(--ink);
    margin-bottom: 28px;
    font-weight: 600;
}

.ep-form-group {
    margin-bottom: 18px;
}

.ep-form-group label {
    display: block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--ink-mid);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 7px;
}

.ep-form-group input,
.ep-form-group select,
.ep-form-group textarea {
    width: 100%;
    background: var(--cream);
    border: 1.5px solid var(--sand);
    border-radius: 12px;
    padding: 12px 15px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.92rem;
    color: var(--ink);
    font-weight: 300;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: none;
    -webkit-appearance: none;
}

.ep-form-group input:focus,
.ep-form-group select:focus,
.ep-form-group textarea:focus {
    border-color: var(--sage);
    box-shadow: 0 0 0 3px rgba(139, 168, 136, 0.15);
}

.ep-form-group textarea {
    resize: none;
    height: 88px;
    line-height: 1.6;
}

.ep-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

/* Drop zone */
.ep-drop-zone {
    border: 2px dashed var(--sand);
    border-radius: 14px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    background: var(--cream);
    margin-bottom: 18px;
    position: relative;
}

.ep-drop-zone:hover,
.ep-drop-zone.dragging {
    border-color: var(--sage);
    background: rgba(139, 168, 136, 0.06);
}

.ep-drop-zone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

.ep-drop-icon {
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.ep-drop-zone p {
    font-size: 0.85rem;
    color: var(--ink-light);
    font-weight: 300;
    line-height: 1.6;
    margin: 0;
}

.ep-drop-zone strong {
    color: var(--slate);
    font-weight: 500;
}

.ep-btn-submit {
    width: 100%;
    background: var(--ink);
    color: var(--cream);
    border: none;
    border-radius: 13px;
    padding: 15px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.97rem;
    font-weight: 500;
    cursor: pointer;
    letter-spacing: 0.02em;
    transition: background 0.2s, transform 0.15s;
}

.ep-btn-submit:hover {
    background: var(--slate);
    transform: translateY(-1px);
}

/* Toast */
.ep-toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--ink);
    color: var(--cream);
    padding: 13px 28px;
    border-radius: 100px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.88rem;
    font-weight: 400;
    z-index: 9999;
    transition: transform 0.3s ease;
    pointer-events: none;
}

.ep-toast.show {
    transform: translateX(-50%) translateY(0);
}

/* ── Hidden cards for "load more" ── */
.ep-card-hidden {
    display: none !important;
}

/* ── Page top spacing (shared header is fixed) ── */
.ep-page-top-spacer {
    height: 80px;
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .ep-hero {
        grid-template-columns: 1fr;
        padding-top: 40px;
    }

    .ep-hero-visual {
        display: none;
    }

    .ep-blog-grid {
        grid-template-columns: 1fr;
    }

    .ep-card-featured,
    .ep-card-stack,
    .ep-card-medium {
        grid-column: span 1;
    }

    .ep-submit-card {
        grid-template-columns: 1fr;
    }

    .ep-form-row {
        grid-template-columns: 1fr;
    }

    .ep-submit-info,
    .ep-submit-form {
        padding: 36px 28px;
    }

    .ep-card-featured-body {
        padding: 22px;
    }

    .ep-card-medium {
        padding: 20px;
    }
}

@media (max-width: 600px) {
    .ep-hero-stats {
        gap: 12px;
    }

    .ep-stat-pill {
        padding: 10px 14px;
    }

    .ep-stat-pill .num {
        font-size: 1.45rem;
    }
}