/* Sub-page styles — used by projects, work, classes, comm pages */

/* Theme: sub-pages use body.light-mode (light default when class present) */
:root {
    --bg: #111;
    --text: #e0e0e0;
    --text-muted: #999;
    --accent: #7da0e0;
    --accent-light: #1e2a3d;
    --border: #2a2a2a;
    --card-bg: #1a1a1a;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Source Serif 4', Georgia, serif;
}

body.light-mode {
    --bg: #fff;
    --text: #1a1a1a;
    --text-muted: #555;
    --accent: #4b6cb7;
    --accent-light: #e8edf5;
    --border: #e0e0e0;
    --card-bg: #fff;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    font-size: 16px;
    transition: background 0.3s, color 0.3s;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* ===== Top header bar ===== */
.top {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.top h1 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    flex: 1;
}

.back-button {
    font-size: 1.1rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}
.back-button:hover { color: var(--accent); text-decoration: none; }

.toggle-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    transition: color 0.2s, border-color 0.2s;
}
.toggle-btn:hover { color: var(--accent); border-color: var(--accent); }

/* Intro text */
.container > h3 {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--text-muted);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.container > h4 {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* ===== Projects grid ===== */
.grid-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.clickable-box {
    display: block;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.clickable-box:hover {
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    text-decoration: none;
}

.box-content { }

.project-title {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.tech-stack {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.tech-stack i {
    margin-right: 0.15rem;
}

/* ===== Work entries ===== */
.work {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: border-color 0.2s;
}
.work:hover { border-color: var(--accent); }

.work-content {
    padding: 1.25rem;
}

.work-title {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.work-attributes {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.75rem;
}

.attribute_tag {
    font-size: 0.78rem;
    padding: 0.2rem 0.55rem;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 4px;
    font-weight: 500;
}

.work-image {
    width: 100%;
    max-height: 200px;
    object-fit: cover;
    border-radius: 4px;
}

.work-popup {
    border-top: 1px solid var(--border);
    padding: 1rem 1.25rem;
    background: var(--bg);
}

.popup-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.4rem;
}

.popup-body {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== Classes grid ===== */
.my_classes { }

.class_container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.individual_class {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    transition: border-color 0.2s;
}
.individual_class:hover { border-color: var(--accent); }

.individual_class h4 {
    font-family: var(--font-serif);
    font-size: 1rem;
    margin-bottom: 0.4rem;
}

.class_attributes {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.5rem;
}

.more_info {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== Comm page: papers & presentations ===== */
.showing_objects_paper,
.showing_objects_pres {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.showing_objects_paper a,
.showing_objects_pres a {
    display: block;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.showing_objects_paper a:hover,
.showing_objects_pres a:hover {
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.showing_objects_paper img,
.showing_objects_pres img {
    width: 100%;
    display: block;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .grid-container,
    .class_container {
        grid-template-columns: 1fr;
    }
}