/* DiaSign web — modern look: light and dark themes, sidebar, cards, status badges. */
:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #e3e8f0;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --primary-50: #eff4ff;
  --brand-1: #3a6fbf;
  --brand-2: #234a86;
  --accent: #f28c28;
  --accent-50: #fff4e8;
  --ok: #16a34a;
  --ok-50: #e9f8ef;
  --warn: #dc2626;
  --warn-50: #fdeeee;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --shadow-lg: 0 20px 45px -12px rgba(16, 24, 40, .25);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --sidebar: 252px;
  color-scheme: light;
}
[data-theme="dark"] {
  --bg: #0f1420;
  --surface: #171e2d;
  --surface-2: #1c2436;
  --border: #2a3448;
  --text: #e6eaf2;
  --muted: #98a2b3;
  --primary: #4f8cff;
  --primary-600: #3b7af0;
  --primary-50: #1b2a48;
  --accent-50: #3a2a1a;
  --ok-50: #15301f;
  --warn-50: #3a1d1d;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { font-family: var(--font); background: var(--bg); color: var(--text); font-size: 14.5px; line-height: 1.45; -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--primary); text-decoration: none; }
h1, h2, h3 { margin: 0; line-height: 1.25; }
h1 { font-size: 22px; font-weight: 700; letter-spacing: -.01em; }
h2 { font-size: 16px; font-weight: 650; }
h3 { font-size: 14px; font-weight: 650; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.hidden { display: none !important; }

.boot { height: 100vh; display: grid; place-content: center; justify-items: center; gap: 14px; color: var(--muted); }
.spinner { width: 28px; height: 28px; border-radius: 50%; border: 3px solid var(--border); border-top-color: var(--primary); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- buttons, fields ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 38px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); cursor: pointer; font-weight: 550; transition: background .15s, border-color .15s, box-shadow .15s, transform .05s; white-space: nowrap; }
.btn:hover { background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, .field:focus-visible, .nav a:focus-visible { outline: 3px solid color-mix(in srgb, var(--primary) 35%, transparent); outline-offset: 1px; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 1px 2px rgba(37, 99, 235, .35); }
.btn.primary:hover { background: var(--primary-600); }
.btn.accent { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.accent:hover { filter: brightness(.95); }
.btn.danger { color: var(--warn); }
.btn.danger.solid { background: var(--warn); border-color: var(--warn); color: #fff; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.ghost:hover { background: var(--surface-2); }
.btn.sm { height: 32px; padding: 0 12px; font-size: 13px; border-radius: 8px; }
.btn.block { width: 100%; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.icon { width: 18px; height: 18px; flex: none; }
.field { width: 100%; height: 40px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); transition: border-color .15s, box-shadow .15s; }
textarea.field { height: auto; min-height: 96px; padding: 10px 12px; resize: vertical; }
.field:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent); outline: none; }
label.lbl { display: block; font-size: 12.5px; font-weight: 600; color: var(--muted); margin: 0 0 6px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.form-grid .full { grid-column: 1 / -1; }
.check { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.check input { width: 17px; height: 17px; accent-color: var(--primary); }
.switch { position: relative; width: 40px; height: 22px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch span { position: absolute; inset: 0; border-radius: 22px; background: var(--border); transition: .2s; cursor: pointer; }
.switch span::after { content: ""; position: absolute; width: 16px; height: 16px; left: 3px; top: 3px; border-radius: 50%; background: #fff; transition: .2s; box-shadow: var(--shadow); }
.switch input:checked + span { background: var(--primary); }
.switch input:checked + span::after { transform: translateX(18px); }

/* ---------- login ---------- */
.auth { min-height: 100vh; display: grid; grid-template-columns: 1.05fr 1fr; }
.auth-brand { position: relative; overflow: hidden; background: radial-gradient(1200px 600px at -10% -20%, #5f8fe0 0%, transparent 55%), linear-gradient(160deg, var(--brand-1), var(--brand-2) 70%); color: #fff; padding: 56px; display: flex; flex-direction: column; justify-content: space-between; }
.auth-brand::after { content: ""; position: absolute; right: -120px; bottom: -120px; width: 420px; height: 420px; border-radius: 50%; background: rgba(255, 255, 255, .07); }
.auth-brand .logo-line { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 20px; }
.auth-brand h2 { font-size: 34px; font-weight: 750; letter-spacing: -.02em; max-width: 440px; margin-bottom: 14px; line-height: 1.15; }
.auth-brand p { max-width: 430px; color: rgba(255, 255, 255, .85); font-size: 15.5px; }
.auth-feats { display: grid; gap: 12px; margin-top: 28px; }
.auth-feats div { display: flex; gap: 10px; align-items: center; color: rgba(255, 255, 255, .92); }
.auth-feats .icon { color: #ffd2a4; }
.auth-form { display: grid; place-items: center; padding: 40px 24px; }
.auth-card { width: 100%; max-width: 400px; }
.auth-card h1 { margin-bottom: 6px; }
.auth-card .stack { display: grid; gap: 14px; margin-top: 26px; }
.error-box { background: var(--warn-50); color: var(--warn); border: 1px solid color-mix(in srgb, var(--warn) 30%, transparent); padding: 10px 12px; border-radius: 10px; font-size: 13.5px; }
.info-box { background: var(--primary-50); color: var(--text); border: 1px solid color-mix(in srgb, var(--primary) 25%, transparent); padding: 10px 12px; border-radius: 10px; font-size: 13.5px; }

/* ---------- shell ---------- */
.shell { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100vh; }
.sidebar { position: sticky; top: 0; height: 100vh; background: var(--surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; padding: 18px 14px; gap: 6px; }
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 16px; font-weight: 750; font-size: 18px; letter-spacing: -.01em; }
.brand img { width: 30px; height: 30px; }
.brand small { display: block; font-weight: 500; font-size: 11.5px; color: var(--muted); letter-spacing: 0; }
.nav { display: grid; gap: 2px; }
.nav-title { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: 16px 10px 6px; font-weight: 650; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 10px; color: var(--text); font-weight: 520; }
.nav a:hover { background: var(--surface-2); }
.nav a.active { background: var(--primary-50); color: var(--primary); }
.nav a .count { margin-left: auto; min-width: 22px; height: 20px; padding: 0 7px; border-radius: 10px; background: var(--accent); color: #fff; font-size: 11.5px; font-weight: 700; display: grid; place-items: center; }
.side-bottom { margin-top: auto; border-top: 1px solid var(--border); padding-top: 12px; }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: 12px; cursor: pointer; width: 100%; border: none; background: none; text-align: left; }
.user-chip:hover { background: var(--surface-2); }
.avatar { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 13px; color: #fff; background: linear-gradient(135deg, var(--brand-1), var(--primary)); flex: none; }
.avatar.sm { width: 26px; height: 26px; font-size: 11px; }
.user-chip .who { min-width: 0; }
.user-chip .who b { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.menu { position: absolute; bottom: 70px; left: 14px; right: 14px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-lg); padding: 6px; z-index: 30; }
.menu button { display: flex; width: 100%; gap: 10px; align-items: center; padding: 9px 10px; border: none; background: none; border-radius: 8px; cursor: pointer; text-align: left; }
.menu button:hover { background: var(--surface-2); }

.main { min-width: 0; display: flex; flex-direction: column; }
.topbar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 14px; padding: 18px 28px; background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: blur(8px); }
.topbar .grow { flex: 1; }
.search { position: relative; width: min(340px, 40vw); }
.search .icon { position: absolute; left: 11px; top: 11px; color: var(--muted); }
.search input { padding-left: 36px; }
.content { padding: 4px 28px 40px; }
.crumb { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; margin-bottom: 4px; }
.hamburger { display: none; }

/* ---------- cards & lists ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-h { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.card-b { padding: 18px; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin: 6px 0 18px; }
.stat { padding: 16px 18px; display: flex; gap: 14px; align-items: center; }
.stat .ic { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-50); color: var(--primary); }
.stat .ic.or { background: var(--accent-50); color: var(--accent); }
.stat .ic.gr { background: var(--ok-50); color: var(--ok); }
.stat .ic.rd { background: var(--warn-50); color: var(--warn); }
.stat b { font-size: 22px; display: block; line-height: 1.1; }
.list .row { display: grid; grid-template-columns: 44px minmax(0, 2.2fr) 1.3fr 1.2fr 150px 22px; align-items: center; gap: 14px; padding: 14px 18px; border-bottom: 1px solid var(--border); cursor: pointer; transition: background .12s; }
.list .row:last-child { border-bottom: none; }
.list .row:hover { background: var(--surface-2); }
.list .row.head { cursor: default; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 650; padding-top: 10px; padding-bottom: 10px; }
.list .row.head:hover { background: none; }
.doc-ic { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: var(--primary-50); color: var(--primary); }
.doc-ic.todo { background: var(--accent-50); color: var(--accent); }
.title-cell b { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.progress { height: 6px; background: var(--border); border-radius: 6px; overflow: hidden; }
.progress i { display: block; height: 100%; background: var(--ok); border-radius: 6px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 650; background: var(--primary-50); color: var(--primary); white-space: nowrap; }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.done { background: var(--ok-50); color: var(--ok); }
.badge.refused { background: var(--warn-50); color: var(--warn); }
.badge.todo { background: var(--accent-50); color: #c76d12; }
.badge.plain::before { display: none; }
.empty { text-align: center; padding: 56px 20px; color: var(--muted); }
.empty .big { width: 56px; height: 56px; margin: 0 auto 12px; border-radius: 16px; display: grid; place-items: center; background: var(--primary-50); color: var(--primary); }
table.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table th { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 650; }
.table tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: var(--surface-2); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { padding: 2px 9px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); font-size: 12px; }
.tabs { display: inline-flex; gap: 4px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 4px; }
.tabs button { border: none; background: none; padding: 7px 12px; border-radius: 9px; cursor: pointer; font-weight: 550; color: var(--muted); }
.tabs button.on { background: var(--primary-50); color: var(--primary); }

/* ---------- viewer ---------- */
.viewer-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 20px; align-items: start; }
.viewer { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 0 0 24px; min-height: 60vh; }
.viewer-bar { position: sticky; top: 76px; z-index: 5; display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(6px); border-bottom: 1px solid var(--border); border-radius: var(--radius) var(--radius) 0 0; }
.pages { display: grid; justify-items: center; gap: 22px; padding: 22px 16px 0; }
.page { position: relative; background: #fff; box-shadow: 0 2px 10px rgba(16, 24, 40, .14); border-radius: 3px; }
.page canvas.pdf { display: block; border-radius: 3px; }
.page .pno { position: absolute; left: -2px; top: -20px; font-size: 11.5px; color: var(--muted); }
.zone { position: absolute; border: 2px dashed #00a0c8; background: rgba(0, 160, 200, .06); border-radius: 6px; display: flex; align-items: flex-start; justify-content: flex-start; font-size: 11.5px; color: #0b7895; padding: 4px 6px; }
.zone.mine { border-color: var(--accent); background: rgba(242, 140, 40, .1); color: #b9620c; cursor: pointer; animation: pulse 2s ease-in-out infinite; }
.zone.mine:hover { background: rgba(242, 140, 40, .18); }
.zone.signed { border: 1px solid transparent; background: none; padding: 0; animation: none; cursor: default; }
.zone .x { position: absolute; top: -10px; right: -10px; width: 22px; height: 22px; border-radius: 50%; border: none; background: var(--warn); color: #fff; cursor: pointer; display: grid; place-items: center; font-size: 13px; line-height: 1; }
.zone.draft { border-style: solid; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(242, 140, 40, .0); } 50% { box-shadow: 0 0 0 6px rgba(242, 140, 40, .18); } }
.ink { position: absolute; pointer-events: none; }
.mention { position: absolute; font-size: 11px; color: #222; pointer-events: none; }
.placeholder-lines { position: absolute; inset: 8% 10% auto 10%; display: grid; gap: 10px; pointer-events: none; }
.placeholder-lines i { display: block; height: 7px; border-radius: 4px; background: #e8ecf2; }
.side-panel { display: grid; gap: 16px; position: sticky; top: 76px; }
.kv { display: grid; grid-template-columns: 110px 1fr; gap: 8px 10px; font-size: 13.5px; }
.kv span:nth-child(odd) { color: var(--muted); }
.timeline { display: grid; gap: 4px; }
.tl { display: grid; grid-template-columns: 30px 1fr auto; gap: 10px; align-items: center; padding: 8px 6px; border-radius: 10px; }
.tl:hover { background: var(--surface-2); }
.tl .dot { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); }
.tl .dot.ok { background: var(--ok-50); color: var(--ok); border-color: transparent; }
.tl .dot.no { background: var(--warn-50); color: var(--warn); border-color: transparent; }
.tl .dot.me { background: var(--accent-50); color: var(--accent); border-color: transparent; }
.actions-grid { display: grid; gap: 10px; }

/* ---------- modal, drawer, toast ---------- */
.overlay { position: fixed; inset: 0; background: rgba(15, 20, 32, .45); backdrop-filter: blur(2px); display: grid; place-items: center; z-index: 50; padding: 20px; animation: fade .15s ease-out; }
@keyframes fade { from { opacity: 0; } }
.modal { width: min(560px, 100%); max-height: calc(100vh - 40px); overflow: auto; background: var(--surface); border-radius: 18px; box-shadow: var(--shadow-lg); animation: up .18s ease-out; }
.modal.wide { width: min(1100px, 100%); }
@keyframes up { from { transform: translateY(10px); opacity: .6; } }
.modal-h { display: flex; align-items: center; gap: 10px; padding: 18px 22px 0; }
.modal-h .grow { flex: 1; }
.modal-b { padding: 16px 22px; }
.modal-f { display: flex; gap: 10px; justify-content: flex-end; padding: 0 22px 20px; }
.pad-wrap { display: grid; justify-items: center; gap: 10px; }
.pad { width: min(420px, 78vw); aspect-ratio: 1 / 1; border: 1.5px dashed var(--border); border-radius: 14px; background: #fff; touch-action: none; cursor: crosshair; background-image: linear-gradient(transparent calc(78% - 1px), #e3e8f0 78%, transparent calc(78% + 1px)); }
.pad.small { width: min(320px, 70vw); }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(520px, 100%); background: var(--surface); box-shadow: var(--shadow-lg); z-index: 51; display: flex; flex-direction: column; animation: slide .2s ease-out; }
@keyframes slide { from { transform: translateX(30px); opacity: .5; } }
.drawer .modal-b { flex: 1; overflow: auto; }
#toasts { position: fixed; right: 20px; bottom: 20px; display: grid; gap: 10px; z-index: 80; }
.toast { min-width: 260px; max-width: 420px; padding: 12px 14px; border-radius: 12px; background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-lg); display: flex; gap: 10px; align-items: flex-start; animation: up .2s ease-out; }
.toast.ok .icon { color: var(--ok); }
.toast.err .icon { color: var(--warn); }

/* ---------- new request wizard ---------- */
.steps { display: flex; gap: 8px; align-items: center; margin: 4px 0 18px; }
.step { display: flex; align-items: center; gap: 8px; color: var(--muted); font-weight: 600; font-size: 13.5px; }
.step i { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-style: normal; background: var(--surface); border: 1px solid var(--border); }
.step.on { color: var(--primary); }
.step.on i { background: var(--primary); border-color: var(--primary); color: #fff; }
.step.done i { background: var(--ok); border-color: var(--ok); color: #fff; }
.step-sep { width: 32px; height: 2px; background: var(--border); border-radius: 2px; }
.drop { border: 2px dashed var(--border); border-radius: 16px; padding: 42px 20px; text-align: center; background: var(--surface-2); cursor: pointer; transition: .15s; }
.drop:hover, .drop.over { border-color: var(--primary); background: var(--primary-50); }
.recip { display: grid; grid-template-columns: minmax(0, 1fr) auto auto auto 36px; gap: 14px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); }
.place-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.signer-chip { border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px 6px 6px; display: inline-flex; gap: 8px; align-items: center; background: var(--surface); cursor: pointer; font-weight: 550; }
.signer-chip.on { border-color: var(--accent); background: var(--accent-50); }
.signer-chip .n { font-size: 12px; color: var(--muted); }
.page.placing { cursor: crosshair; }

@media (max-width: 1100px) {
  .viewer-wrap { grid-template-columns: 1fr; }
  .side-panel { position: static; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 820px) {
  .auth { grid-template-columns: 1fr; }
  .auth-brand { display: none; }
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; z-index: 40; left: 0; width: var(--sidebar); transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: none; box-shadow: var(--shadow-lg); }
  .hamburger { display: inline-flex; }
  .list .row { grid-template-columns: 40px minmax(0, 1fr) 110px; }
  .list .row > :nth-child(3), .list .row > :nth-child(4), .list .row > :nth-child(6) { display: none; }
  .content, .topbar { padding-left: 16px; padding-right: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .search { display: none; }
}