/* Locus Forum — Matches main Locus frontend design */

:root {
    --bg: #ffffff;
    --bg-subtle: #f9fafb;
    --bg-muted: #f3f4f6;
    --bg-hover: #f9fafb;
    --border: #e5e7eb;
    --border-strong: #d1d5db;
    --text: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --accent: #111827;
    --accent-hover: #374151;
    --accent-text: #ffffff;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --focus-ring: #111827;
    --green: #16a34a;
    --red: #dc2626;
    --amber: #d97706;
    --radius: 4px;

    /* Tags */
    --tag-feature-bg: #eef2ff;
    --tag-feature-text: #4338ca;
    --tag-bug-bg: #fef2f2;
    --tag-bug-text: #b91c1c;
    --tag-pinned-bg: #fffbeb;
    --tag-pinned-text: #92400e;
    --tag-locked-bg: #f5f5f4;
    --tag-locked-text: #57534e;
    --tag-open-bg: #f0fdf4;
    --tag-open-text: #166534;
    --tag-planned-bg: #eef2ff;
    --tag-planned-text: #4338ca;
    --tag-progress-bg: #fffbeb;
    --tag-progress-text: #92400e;
    --tag-done-bg: #f0fdf4;
    --tag-done-text: #166534;
    --tag-wontfix-bg: #f5f5f4;
    --tag-wontfix-text: #57534e;

    /* Alerts */
    --alert-error-bg: #fef2f2;
    --alert-error-text: #b91c1c;
    --alert-error-border: #fecaca;
}

html.dark {
    --bg: #030712;
    --bg-subtle: #111827;
    --bg-muted: #1f2937;
    --bg-hover: #1f2937;
    --border: #1f2937;
    --border-strong: #374151;
    --text: #f3f4f6;
    --text-secondary: #d1d5db;
    --text-muted: #6b7280;
    --accent: #f3f4f6;
    --accent-hover: #e5e7eb;
    --accent-text: #111827;
    --input-bg: #111827;
    --input-border: #374151;
    --focus-ring: #9ca3af;
    --green: #22c55e;
    --red: #ef4444;
    --amber: #f59e0b;

    --tag-feature-bg: #1e1b4b;
    --tag-feature-text: #a5b4fc;
    --tag-bug-bg: #450a0a;
    --tag-bug-text: #fca5a5;
    --tag-pinned-bg: #451a03;
    --tag-pinned-text: #fcd34d;
    --tag-locked-bg: #1c1917;
    --tag-locked-text: #a8a29e;
    --tag-open-bg: #052e16;
    --tag-open-text: #86efac;
    --tag-planned-bg: #1e1b4b;
    --tag-planned-text: #a5b4fc;
    --tag-progress-bg: #451a03;
    --tag-progress-text: #fdba74;
    --tag-done-bg: #052e16;
    --tag-done-text: #86efac;
    --tag-wontfix-bg: #1c1917;
    --tag-wontfix-text: #a8a29e;

    --alert-error-bg: #450a0a;
    --alert-error-text: #fca5a5;
    --alert-error-border: #7f1d1d;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

a { color: var(--text); text-decoration: none; }
a:hover { color: var(--text-secondary); }

/* Nav */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-left { display: flex; align-items: center; }
.nav-logo {
    font-size: 16px;
    font-weight: 600;
    color: var(--text) !important;
    letter-spacing: -0.3px;
}
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-user { color: var(--text-muted); font-size: 14px; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    background: transparent;
    color: var(--text);
    transition: background-color 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--bg-hover); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-text);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-ghost { border-color: transparent; }
.btn-ghost:hover { background: var(--bg-hover); }
.btn-sm { padding: 4px 12px; font-size: 13px; }
.btn-full { width: 100%; }
.btn-vote { font-weight: 600; font-size: 15px; }
.btn-vote.voted { color: var(--accent); border-color: var(--accent); }

/* Layout */
.main-content { max-width: 800px; margin: 0 auto; padding: 24px 16px; }
.page-center {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 56px);
    padding: 16px;
}
.page-header { margin-bottom: 24px; }
.page-header h1 { font-size: 24px; font-weight: 700; }
.subtitle { color: var(--text-muted); font-size: 14px; margin-top: 4px; }

/* Cards */
.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}
.login-card, .new-post-card { max-width: 440px; width: 100%; }
.login-card h1, .new-post-card h1 { font-size: 20px; margin-bottom: 4px; }
.login-card .subtitle { margin-bottom: 24px; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}
input, select, textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--focus-ring);
}
input::placeholder, textarea::placeholder { color: var(--text-muted); }
textarea { resize: vertical; }

/* Search */
.search-form { margin-bottom: 16px; }

/* Filters */
.filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    gap: 16px;
}
.filter-tabs { display: flex; gap: 4px; }
.tab {
    padding: 6px 14px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    background: transparent;
    color: var(--text-muted);
    border: none;
    transition: background-color 0.15s, color 0.15s;
}
.tab:hover { color: var(--text); background: var(--bg-hover); }
.tab.active { color: var(--text); background: var(--bg-muted); }
.filter-sort select { width: auto; padding: 6px 12px; }

/* Post cards */
.post-card {
    display: flex;
    gap: 16px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 8px;
    transition: border-color 0.15s;
}
.post-card:hover { border-color: var(--border-strong); }
.post-card.pinned { border-left: 3px solid var(--amber); }
.post-votes {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 48px;
    padding-top: 4px;
}
.vote-count { font-size: 18px; font-weight: 700; }
.vote-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; }
.post-content { flex: 1; min-width: 0; }
.post-header { display: flex; gap: 6px; margin-bottom: 6px; flex-wrap: wrap; }
.post-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    display: block;
    margin-bottom: 6px;
}
.post-title:hover { color: var(--text-secondary); }
.post-meta { font-size: 13px; color: var(--text-muted); display: flex; gap: 6px; }
.separator { opacity: 0.5; }

/* Tags */
.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.tag-feature { background: var(--tag-feature-bg); color: var(--tag-feature-text); }
.tag-bug { background: var(--tag-bug-bg); color: var(--tag-bug-text); }
.tag-pinned { background: var(--tag-pinned-bg); color: var(--tag-pinned-text); }
.tag-locked { background: var(--tag-locked-bg); color: var(--tag-locked-text); }
.tag-status-open { background: var(--tag-open-bg); color: var(--tag-open-text); }
.tag-status-planned { background: var(--tag-planned-bg); color: var(--tag-planned-text); }
.tag-status-in_progress { background: var(--tag-progress-bg); color: var(--tag-progress-text); }
.tag-status-done { background: var(--tag-done-bg); color: var(--tag-done-text); }
.tag-status-wontfix { background: var(--tag-wontfix-bg); color: var(--tag-wontfix-text); }

/* Post detail */
.post-detail-header { margin-bottom: 24px; }
.post-detail-tags { display: flex; gap: 6px; margin-bottom: 12px; }
.post-detail-title { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.post-detail-body {
    padding: 20px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    white-space: pre-wrap;
    line-height: 1.7;
    margin-bottom: 16px;
}
.post-actions { margin-bottom: 32px; }

/* Comments */
.comments-section { margin-top: 16px; }
.comments-section h2 { font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.comment {
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 8px;
}
.comment-header { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; }
.comment-author { font-weight: 600; font-size: 14px; }
.comment-time { font-size: 12px; color: var(--text-muted); }
.comment-body { font-size: 14px; white-space: pre-wrap; }
.comment-form { margin-top: 16px; }
.comment-form textarea { margin-bottom: 8px; }

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 16px;
}
.alert-error {
    background: var(--alert-error-bg);
    color: var(--alert-error-text);
    border: 1px solid var(--alert-error-border);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 24px;
}
.page-num { font-size: 14px; color: var(--text-muted); }

/* States */
.loading { text-align: center; color: var(--text-muted); padding: 40px; }
.empty { text-align: center; color: var(--text-muted); padding: 40px; }
.locked-notice, .login-notice {
    text-align: center;
    color: var(--text-muted);
    padding: 20px;
    font-size: 14px;
    margin-top: 16px;
}

/* Responsive */
@media (max-width: 600px) {
    .main-content { padding: 16px 12px; }
    .filters { flex-direction: column; align-items: stretch; }
    .post-card { padding: 12px; gap: 12px; }
}