:root {
    --bg: #f6f7fb;
    --surface: #ffffff;
    --border: #e3e6ec;
    --text: #1a1d29;
    --text-muted: #666d80;
    --primary: #3454d1;
    --primary-dark: #2740a8;
    --clean: #1a9c6b;
    --clean-bg: #e6f7f0;
    --flagged: #b8790a;
    --flagged-bg: #fdf2e0;
    --blocked: #c13838;
    --blocked-bg: #fbe8e8;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(20, 24, 41, 0.08), 0 1px 2px rgba(20, 24, 41, 0.06);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.topnav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 28px;
    background: #14172b;
    color: #fff;
}
.topnav .brand { color: #fff; font-weight: 600; text-decoration: none; letter-spacing: -0.01em; }
.nav-links a { color: #cfd3ee; text-decoration: none; margin-left: 20px; font-size: 0.92rem; }
.nav-links a:hover { color: #fff; }

.container { max-width: 860px; margin: 0 auto; padding: 32px 20px 80px; }

h1 { font-size: 1.6rem; margin: 0 0 20px; letter-spacing: -0.01em; }
h2 { font-size: 1.1rem; color: var(--text-muted); margin: 32px 0 12px; font-weight: 600; }

/* Login */
.login-box {
    max-width: 340px;
    margin: 14vh auto 0;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 32px;
    text-align: center;
}
.login-box h1 { margin-bottom: 4px; }
.login-box .subtitle { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 24px; }
.login-box form { display: flex; flex-direction: column; gap: 10px; }
.login-box input { padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 0.95rem; }
.login-box button { padding: 10px 12px; border: none; border-radius: 8px; background: var(--primary); color: #fff; font-weight: 600; cursor: pointer; }
.login-box button:hover { background: var(--primary-dark); }
.error { color: var(--blocked); font-size: 0.88rem; }

/* Stats */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 8px; }
.stat-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px;
    text-align: center;
}
.stat-num { display: block; font-size: 1.6rem; font-weight: 700; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.stat-card.tier-clean .stat-num { color: var(--clean); }
.stat-card.tier-flagged .stat-num { color: var(--flagged); }
.stat-card.tier-blocked .stat-num { color: var(--blocked); }

/* Sessions list */
.session-list { display: flex; flex-direction: column; gap: 10px; }
.session-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px 20px;
    text-decoration: none;
    color: var(--text);
    transition: transform 0.08s ease;
}
.session-row:hover { transform: translateY(-1px); }
.session-row-main { display: flex; flex-direction: column; }
.session-label { font-weight: 600; }
.session-date { font-size: 0.8rem; color: var(--text-muted); }
.badge-row { display: flex; gap: 6px; }
.empty { color: var(--text-muted); }

/* Badges */
.badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 9px;
    border-radius: 999px;
    white-space: nowrap;
}
.badge-clean { background: var(--clean-bg); color: var(--clean); }
.badge-flagged { background: var(--flagged-bg); color: var(--flagged); }
.badge-blocked { background: var(--blocked-bg); color: var(--blocked); }

/* Item cards (session detail) */
.item-list { display: flex; flex-direction: column; gap: 10px; }
.item-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--border);
    overflow: hidden;
}
.item-card.tier-clean { border-left-color: var(--clean); }
.item-card.tier-flagged { border-left-color: var(--flagged); }
.item-card.tier-blocked { border-left-color: var(--blocked); }
.item-card summary {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    cursor: pointer;
    list-style: none;
}
.item-card summary::-webkit-details-marker { display: none; }
.item-label { font-weight: 600; color: var(--text-muted); font-size: 0.85rem; min-width: 60px; }
.item-client { flex: 1; font-weight: 600; }
.item-body { padding: 0 20px 20px; border-top: 1px solid var(--border); }
.item-fields {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px 20px;
    margin: 16px 0;
    font-size: 0.9rem;
}
.f-label { color: var(--text-muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; display: block; }
.line-table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 0.9rem; }
.line-table th, .line-table td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border); }
.line-table th { color: var(--text-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; }
.item-body h4 { font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; margin: 16px 0 6px; }
.reason-list { margin: 0; padding-left: 18px; font-size: 0.9rem; }
.reason-list li { margin-bottom: 4px; }
.all-clear { color: var(--clean); font-size: 0.9rem; }

/* New session form */
.new-session-form { display: flex; flex-direction: column; gap: 6px; max-width: 640px; }
.new-session-form label { font-weight: 600; font-size: 0.88rem; margin-top: 10px; }
.new-session-form input, .new-session-form textarea {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.92rem;
    resize: vertical;
}
.hint { color: var(--text-muted); font-size: 0.85rem; margin: 2px 0 8px; }
.hint code { background: var(--border); padding: 1px 5px; border-radius: 4px; }
.new-session-form button {
    margin-top: 16px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    align-self: flex-start;
}
.new-session-form button:hover { background: var(--primary-dark); }

.back-link { color: var(--text-muted); text-decoration: none; font-size: 0.88rem; display: inline-block; margin-bottom: 12px; }
.back-link:hover { color: var(--primary); }

/* Feedback / flagging */
.feedback-list { margin: 0 0 12px; padding-left: 18px; font-size: 0.88rem; }
.feedback-list li { margin-bottom: 4px; color: var(--text); }
.feedback-list li.resolved { color: var(--text-muted); text-decoration: line-through; }
.flag-form { display: flex; gap: 8px; margin-top: 14px; }
.flag-form input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.88rem;
    font-family: inherit;
}
.flag-form button {
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    background: var(--flagged);
    color: #fff;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
}
.flag-form button:hover { opacity: 0.9; }

/* Review page */
.feedback-review-list { display: flex; flex-direction: column; gap: 10px; }
.feedback-review-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.feedback-note { margin: 0 0 6px; font-weight: 500; }
.feedback-meta { margin: 0; font-size: 0.82rem; color: var(--text-muted); display: flex; align-items: center; gap: 10px; }
.feedback-meta a { color: var(--text-muted); }
.feedback-date { white-space: nowrap; }
.feedback-review-card button {
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    white-space: nowrap;
}
.feedback-review-card button:hover { border-color: var(--clean); color: var(--clean); }