/* ClinixCore Radiology AI — app theme (no build step; plain CSS) */
:root{
  --bg:#0b1220; --surface:#111a2e; --surface-2:#16233d; --line:#23324f;
  --text:#e8eefc; --muted:#93a2c4; --brand:#4f8cff; --brand-2:#2f6bff;
  --green:#2fbf71; --amber:#f6a609; --red:#ef5350; --blue:#4f8cff; --purple:#a78bfa;
  --radius:14px; --shadow:0 6px 24px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4,h5{margin:0 0 .4em;font-weight:650;letter-spacing:-.01em}
.muted{color:var(--muted)}
.small{font-size:12px}

/* Layout shell */
.app{display:flex;min-height:100vh}
.sidebar{width:240px;flex-shrink:0;background:linear-gradient(180deg,#0d1526,#0b1220);border-right:1px solid var(--line);display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;padding:20px 18px;border-bottom:1px solid var(--line)}
.brand .logo{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--purple));display:grid;place-items:center;color:#fff;font-weight:800}
.brand b{font-size:15px}
.brand .sub{font-size:10px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.nav{padding:12px 10px;display:flex;flex-direction:column;gap:2px;flex:1}
.nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;color:var(--muted);font-weight:500}
.nav a:hover{background:var(--surface);color:var(--text);text-decoration:none}
.nav a.active{background:var(--surface-2);color:#fff}
.nav .ico{width:20px;text-align:center}
.side-foot{padding:14px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.content{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 26px;border-bottom:1px solid var(--line);background:rgba(11,18,32,.7);backdrop-filter:blur(6px);position:sticky;top:0;z-index:20}
.topbar h1{font-size:18px;margin:0}
.page{padding:24px 26px;max-width:1400px;width:100%}

/* Cards */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card .hd{padding:14px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:10px}
.card .hd h3{margin:0;font-size:14px}
.card .bd{padding:18px}
.grid{display:grid;gap:18px}
.row{display:flex;gap:18px;flex-wrap:wrap}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:9px 15px;border-radius:10px;border:1px solid var(--line);background:var(--surface-2);color:var(--text);font-weight:600;cursor:pointer;font-size:13px;transition:.15s}
.btn:hover{border-color:var(--brand);text-decoration:none}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));border-color:transparent;color:#fff}
.btn-primary:hover{filter:brightness(1.08)}
.btn-green{background:var(--green);border-color:transparent;color:#04231a}
.btn-ghost{background:transparent}
.btn-sm{padding:6px 11px;font-size:12px}
.btn-danger{background:transparent;border-color:var(--red);color:var(--red)}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* Badges */
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:11px;font-weight:700;letter-spacing:.02em}
.badge-gray{background:#26324b;color:#aebbd6}
.badge-blue{background:rgba(79,140,255,.16);color:#8fb6ff}
.badge-green{background:rgba(47,191,113,.16);color:#5fe0a0}
.badge-amber{background:rgba(246,166,9,.16);color:#ffca5c}
.badge-red{background:rgba(239,83,80,.18);color:#ff8f8c}

/* Tables */
table{width:100%;border-collapse:collapse}
th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:11px 14px;border-bottom:1px solid var(--line)}
td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:var(--surface-2)}
.table-empty{text-align:center;color:var(--muted);padding:34px}

/* Forms */
label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin-bottom:6px}
input,select,textarea{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font-size:14px;font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(79,140,255,.15)}
textarea{resize:vertical;min-height:90px}
.field{margin-bottom:16px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.err{color:var(--red);font-size:12px;margin-top:5px}
.hint{color:var(--muted);font-size:12px;margin-top:5px}

/* Alerts */
.alert{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-size:13px;border:1px solid transparent}
.alert-ok{background:rgba(47,191,113,.12);border-color:rgba(47,191,113,.4);color:#7ce6ac}
.alert-err{background:rgba(239,83,80,.12);border-color:rgba(239,83,80,.4);color:#ff9b98}
.alert-warn{background:rgba(246,166,9,.1);border-color:rgba(246,166,9,.35);color:#ffca5c}

/* Auth */
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(1200px 600px at 50% -10%,rgba(79,140,255,.14),transparent),var(--bg)}
.auth-card{width:100%;max-width:430px}
.auth-brand{text-align:center;margin-bottom:22px}
.auth-brand .logo{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--purple));display:inline-grid;place-items:center;color:#fff;font-weight:800;font-size:22px}
.auth-brand h2{margin:14px 0 2px}

/* Study page layout */
.study-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:18px;align-items:start}
@media(max-width:1100px){.study-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}}
.viewer-frame{width:100%;height:520px;border:0;border-radius:12px;background:#000}
.thumbs{display:flex;gap:8px;overflow-x:auto;padding:4px 2px}
.thumbs img{height:64px;width:64px;object-fit:cover;border-radius:8px;border:1px solid var(--line);cursor:pointer;background:#000}
.kv{display:flex;flex-wrap:wrap;gap:8px 26px}
.kv div{min-width:120px}
.kv .k{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.kv .v{font-weight:600}

/* AI report card */
.ai-report{border:1px solid rgba(79,140,255,.35);border-radius:12px;background:linear-gradient(180deg,rgba(79,140,255,.07),transparent);padding:14px 16px;margin-top:8px}
.ai-head{display:flex;align-items:center;gap:9px;color:#9dc0ff;font-weight:700;margin-bottom:8px}
.disclaimer{font-size:11px;color:var(--muted);border-top:1px dashed var(--line);margin-top:12px;padding-top:9px}

/* Chat */
.chat{display:flex;flex-direction:column;height:100%}
.chat-log{flex:1;overflow-y:auto;padding:6px 2px;display:flex;flex-direction:column;gap:12px;min-height:260px}
.bubble{max-width:88%;padding:11px 14px;border-radius:14px;font-size:13.5px}
.bubble.user{align-self:flex-end;background:var(--brand-2);color:#fff;border-bottom-right-radius:4px}
.bubble.ai{align-self:flex-start;background:var(--surface-2);border:1px solid var(--line);border-bottom-left-radius:4px}
.bubble p:first-child{margin-top:0}.bubble p:last-child{margin-bottom:0}
.bubble pre{white-space:pre-wrap;background:rgba(0,0,0,.25);padding:8px;border-radius:8px;overflow-x:auto}
.bubble .att{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.bubble .att img{height:54px;border-radius:6px;border:1px solid rgba(255,255,255,.2)}
.chat-input{display:flex;gap:8px;margin-top:10px;align-items:flex-end}
.chat-input textarea{min-height:44px;max-height:150px}
.att-tray{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.att-chip{display:flex;align-items:center;gap:6px;background:var(--surface-2);border:1px solid var(--line);border-radius:8px;padding:4px 8px;font-size:12px}
.att-chip img{height:26px;width:26px;object-fit:cover;border-radius:4px}
.picker-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:8px;max-height:260px;overflow-y:auto}
.picker-grid figure{margin:0;cursor:pointer;border:2px solid transparent;border-radius:8px;overflow:hidden}
.picker-grid figure.sel{border-color:var(--brand)}
.picker-grid img{width:100%;height:80px;object-fit:cover;display:block;background:#000}

/* Modal */
.modal-back{position:fixed;inset:0;background:rgba(2,6,16,.72);display:none;place-items:center;z-index:60;padding:20px}
.modal-back.open{display:grid}
.modal{background:var(--surface);border:1px solid var(--line);border-radius:16px;width:100%;max-width:1150px;max-height:92vh;display:flex;flex-direction:column;overflow:hidden}
.modal.sm{max-width:520px}
.modal .mh{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line)}
.modal .mb{padding:16px;overflow:auto}
.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;display:inline-block;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:14px}
.tabs button{background:none;border:0;border-bottom:2px solid transparent;color:var(--muted);padding:9px 14px;font-weight:600;cursor:pointer;width:auto}
.tabs button.active{color:#fff;border-color:var(--brand)}