/* =====================================================================
   Pharma Track — Stylesheet
   Palette: ink #1B2430, paper #FAFAF8, teal #0E7C7B, amber #C17817, red #A23B3B
   Type: Inter (UI), IBM Plex Mono (codes/data)
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
    --ink: #1B2430;
    --ink-soft: #3D4757;
    --paper: #FAFAF8;
    --paper-dim: #F0EEE8;
    --line: #DDD9CF;
    --teal: #0E7C7B;
    --teal-dim: #E4F0EF;
    --amber: #C17817;
    --amber-dim: #FBF0E1;
    --red: #A23B3B;
    --red-dim: #F8E9E9;
    --font-ui: 'Inter', -apple-system, sans-serif;
    --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
    --radius: 4px;
    --shadow: 0 1px 2px rgba(27,36,48,0.06), 0 1px 12px rgba(27,36,48,0.04);
}

* { box-sizing: border-box; }
html, body {
    margin: 0; padding: 0;
    font-family: var(--font-ui);
    background: var(--paper);
    color: var(--ink);
    font-size: 15px;
    line-height: 1.5;
}
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--font-ui); font-weight: 700; margin: 0 0 0.5em; color: var(--ink); }
code, .mono, .batch-code, .qr-token { font-family: var(--font-mono); }

button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--teal);
    outline-offset: 2px;
}

/* ---------- Layout shell ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
    width: 240px;
    background: var(--ink);
    color: #C9D2DC;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}
.sidebar .brand {
    padding: 22px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.sidebar .brand .mark {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.08em;
    color: var(--teal);
    text-transform: uppercase;
}
.sidebar .brand .name {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-top: 2px;
}
.sidebar nav { flex: 1; padding: 16px 0; }
.sidebar nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: #B6C0CC;
    font-size: 14px;
    font-weight: 500;
    border-left: 3px solid transparent;
}
.sidebar nav a:hover { background: rgba(255,255,255,0.04); color: #fff; text-decoration: none; }
.sidebar nav a.active {
    background: rgba(14,124,123,0.18);
    color: #fff;
    border-left-color: var(--teal);
}
.sidebar nav .section-label {
    padding: 16px 20px 6px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #6B7787;
}
.sidebar .user-box {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 13px;
}
.sidebar .user-box .name { color: #fff; font-weight: 600; }
.sidebar .user-box a { color: #8FA0B0; font-size: 12px; }

.main { flex: 1; min-width: 0; }
.topbar {
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 16px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.topbar h1 { font-size: 19px; margin: 0; }
.content { padding: 28px; max-width: 1200px; }

/* ---------- Cards / panels ---------- */
.card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px 22px;
    margin-bottom: 20px;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.card-header h2, .card-header h3 { margin: 0; font-size: 16px; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-box {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px 18px;
}
.stat-box .label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-soft); }
.stat-box .value { font-family: var(--font-mono); font-size: 28px; font-weight: 600; margin-top: 4px; color: var(--ink); }
.stat-box .value.teal { color: var(--teal); }
.stat-box .value.amber { color: var(--amber); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); font-size: 14px; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); font-weight: 600; background: var(--paper-dim); }
tr:hover td { background: var(--paper-dim); }
td .sub { font-size: 12px; color: var(--ink-soft); }

/* ---------- Badges / status ---------- */
.badge {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.badge-teal { background: var(--teal-dim); color: var(--teal); }
.badge-amber { background: var(--amber-dim); color: var(--amber); }
.badge-red { background: var(--red-dim); color: var(--red); }
.badge-gray { background: var(--paper-dim); color: var(--ink-soft); }

/* ---------- Forms ---------- */
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; color: var(--ink-soft); }
input[type=text], input[type=number], input[type=date], input[type=email], input[type=password], select, textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    font-family: var(--font-ui);
    font-size: 14px;
    background: #fff;
    color: var(--ink);
    margin-bottom: 14px;
}
input.mono-input { font-family: var(--font-mono); }
textarea { min-height: 80px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row.three { grid-template-columns: 1fr 1fr 1fr; }
.help-text { font-size: 12px; color: var(--ink-soft); margin-top: 4px; margin-bottom: 14px; }

.btn {
    display: inline-block;
    padding: 9px 18px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    font-family: var(--font-ui);
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #2A3645; text-decoration: none; }
.btn-teal { background: var(--teal); color: #fff; }
.btn-teal:hover { background: #0B6463; text-decoration: none; }
.btn-outline { background: #fff; border-color: var(--line); color: var(--ink); }
.btn-outline:hover { background: var(--paper-dim); text-decoration: none; }
.btn-danger { background: var(--red); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 12px; }

/* ---------- Flash messages ---------- */
.flash { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 18px; font-size: 14px; }
.flash-success { background: var(--teal-dim); color: var(--teal); border: 1px solid #BFE0DF; }
.flash-error { background: var(--red-dim); color: var(--red); border: 1px solid #E6C5C5; }

/* ---------- Genealogy chain (signature element) ---------- */
.chain {
    display: flex;
    align-items: stretch;
    gap: 0;
    overflow-x: auto;
    padding: 8px 0 16px;
}
.chain-node {
    flex-shrink: 0;
    min-width: 220px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px 16px;
    position: relative;
}
.chain-node .stage-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--teal);
    font-weight: 700;
}
.chain-node .stage-name { font-weight: 600; margin: 4px 0 2px; font-size: 14px; }
.chain-node .stage-batch { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); }
.chain-node .stage-qty { font-family: var(--font-mono); font-size: 12px; color: var(--ink); margin-top: 6px; }
.chain-connector {
    flex-shrink: 0;
    width: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--line);
    font-size: 18px;
}
.chain-group { display: flex; flex-direction: column; gap: 8px; flex-shrink: 0; }

/* ---------- Login page ---------- */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink);
}
.login-box {
    background: #fff;
    border-radius: 6px;
    padding: 36px 36px 28px;
    width: 380px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.login-box .mark { font-family: var(--font-mono); color: var(--teal); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; }
.login-box h1 { font-size: 22px; margin: 4px 0 22px; }

/* ---------- Public verify page ---------- */
.verify-wrap { max-width: 560px; margin: 0 auto; padding: 32px 20px 60px; }
.verify-seal {
    text-align: center;
    padding: 40px 20px 28px;
}
.verify-seal .icon {
    width: 72px; height: 72px;
    border-radius: 50%;
    background: var(--teal-dim);
    color: var(--teal);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px;
    font-size: 36px;
}
.verify-seal.invalid .icon { background: var(--red-dim); color: var(--red); }
.verify-seal h1 { font-size: 22px; margin-bottom: 4px; }
.verify-seal p { color: var(--ink-soft); font-size: 14px; margin: 0; }

.verify-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 16px;
}
.verify-row { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--paper-dim); font-size: 14px; }
.verify-row:last-child { border-bottom: none; }
.verify-row .label { color: var(--ink-soft); }
.verify-row .value { font-weight: 600; text-align: right; }

.trace-step {
    display: flex;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--paper-dim);
}
.trace-step:last-child { border-bottom: none; }
.trace-step .dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--teal);
    margin-top: 5px;
    flex-shrink: 0;
}
.trace-step .step-title { font-weight: 600; font-size: 14px; }
.trace-step .step-detail { font-size: 13px; color: var(--ink-soft); margin-top: 2px; }

.footer-note {
    text-align: center;
    font-size: 12px;
    color: var(--ink-soft);
    margin-top: 24px;
}

@media (max-width: 720px) {
    .sidebar { display: none; }
    .form-row, .form-row.three { grid-template-columns: 1fr; }
    .content { padding: 16px; }
}