:root {
    --ink: #1E2E3B;
    --paper: #F3F5F0;
    --card: #FFFFFF;
    --accent: #B8722E;
    --accent-dim: #E8D3B8;
    --sage: #5C7A63;
    --sage-dim: #DCE6DF;
    --line: #DDE2D8;
    --muted: #7C8A82;
    --danger: #A8412F;
    --font-display: 'Fraunces', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
}

a { color: var(--accent); }

.wrap {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 28px 0 20px;
    border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 10px; }

.brand-mark {
    font-size: 22px;
    color: var(--accent);
}

.brand h1 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 22px;
    margin: 0;
    letter-spacing: 0.2px;
}

.tabs {
    display: flex;
    gap: 4px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 4px;
}

.tabs a {
    text-decoration: none;
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 999px;
}

.tabs a.active {
    background: var(--ink);
    color: #fff;
}

/* Page intro */
.page-intro { padding: 32px 0 8px; }

.page-intro h2 {
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 600;
    margin: 0 0 6px;
}

.page-intro p {
    color: var(--muted);
    margin: 0;
    font-size: 15px;
}

.group-label {
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 1.2px;
    color: var(--muted);
    margin: 32px 0 14px;
}

.empty-state {
    color: var(--muted);
    background: var(--card);
    border: 1px dashed var(--line);
    border-radius: 10px;
    padding: 24px;
    text-align: center;
    margin-top: 20px;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    list-style: none;
}
.btn-primary::-webkit-details-marker { display: none; }
summary.btn-primary { list-style: none; }

.btn-primary:hover { background: #A0641F; }

.btn-danger {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
    padding: 9px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
}
.btn-danger:hover { background: #FBEAE7; }

/* New-item forms (top of page) */
.new-form-wrap { margin-top: 24px; }
.new-form-wrap summary { cursor: pointer; }
.new-form-wrap summary::marker { content: ''; }

.card-form {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 20px;
    margin-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.card-form label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
}

.card-form .opt {
    font-weight: 400;
    color: var(--muted);
    text-transform: none;
    letter-spacing: 0;
}

.card-form input,
.card-form textarea {
    font-family: var(--font-body);
    font-size: 15px;
    padding: 9px 11px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--paper);
    color: var(--ink);
}

.card-form input:focus,
.card-form textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 4px;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 26px;
    margin-top: 4px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 5px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: var(--line);
}

.timeline-past { opacity: 0.9; }

.session-card {
    position: relative;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 18px 20px;
    margin-bottom: 16px;
}

.session-dot {
    position: absolute;
    left: -26px;
    top: 24px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--card);
    border: 2px solid var(--accent);
}

.session-card.is-past .session-dot {
    border-color: var(--sage);
}

.session-when {
    display: flex;
    align-items: baseline;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 8px;
}

.session-card.is-past .session-when { color: var(--sage); }

.s-time { color: var(--muted); }

.session-body h4 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 6px;
}

.muted { color: var(--muted); font-weight: 400; font-style: italic; }

.log {
    font-size: 14.5px;
    color: #3C4A45;
    background: var(--paper);
    border-left: 3px solid var(--sage);
    padding: 10px 14px;
    border-radius: 0 6px 6px 0;
    margin: 8px 0;
    white-space: pre-wrap;
}

details summary {
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    color: var(--muted);
    margin-top: 6px;
}

details[open] summary { color: var(--ink); }

/* Resources */
.resource-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.resource-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 16px 18px;
}

.resource-title {
    display: block;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    color: var(--ink);
    margin-bottom: 3px;
}

.resource-title:hover { color: var(--accent); }

.resource-url {
    display: block;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--muted);
    word-break: break-all;
    margin-bottom: 8px;
}

/* Login gate */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    background: var(--paper);
    font-family: var(--font-body);
}

.login-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 36px;
    width: 300px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.login-card h1 {
    font-family: var(--font-display);
    font-size: 20px;
    margin: 0;
}

.login-card p { color: var(--muted); font-size: 14px; margin: 0 0 6px; }

.login-card input {
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 7px;
    font-size: 15px;
}

.login-card button {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 10px;
    border-radius: 7px;
    font-weight: 600;
    cursor: pointer;
}

/* Mobile */
@media (max-width: 600px) {
    .grid-2, .resource-grid { grid-template-columns: 1fr; }
    .site-header { flex-direction: column; align-items: flex-start; }
    .page-intro h2 { font-size: 26px; }
}