/* TEMassist app shell — login + landing. Carries the brief's design language (same ink/paper,
 * severity palette, system font) so the three surfaces read as one product. Login/landing
 * follow the OS day/night preference via @media (the brief itself has a manual toggle in
 * brief.js); the palette is identical either way. Same-origin asset — CSP script/style clean. */

:root {
    --ink: #182126;          --ink-rgb: 24, 33, 38;
    --paper: #f4efe5;
    --panel: rgba(255, 252, 246, 0.88);
    --line: rgba(var(--ink-rgb), 0.12);
    --shadow: rgba(var(--ink-rgb), 0.14);
    --critical: #8f1d14;     --critical-rgb: 143, 29, 20;
    --high: #c5611f;         --high-rgb: 197, 97, 31;
    --medium: #b08a12;       --medium-rgb: 176, 138, 18;
    --low: #356a48;          --low-rgb: 53, 106, 72;
    --accent: #0f5f73;       --accent-rgb: 15, 95, 115;
}

@media (prefers-color-scheme: dark) {
    :root {
        --ink: #e6edf3;      --ink-rgb: 230, 237, 243;
        --paper: #0d1117;
        --panel: rgba(28, 33, 40, 0.85);
        --line: rgba(var(--ink-rgb), 0.16);
        --critical: #f85149; --critical-rgb: 248, 81, 73;
        --high: #e3923b;     --high-rgb: 227, 146, 59;
        --medium: #d6c23b;   --medium-rgb: 214, 194, 59;
        --low: #3fb950;      --low-rgb: 63, 185, 80;
        --accent: #56b6c2;   --accent-rgb: 86, 182, 194;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at bottom right, rgba(var(--high-rgb), 0.16), transparent 28%),
        linear-gradient(160deg, #ede5d5 0%, var(--paper) 42%, #f8f4ec 100%);
    background-attachment: fixed;
    display: flex;
    flex-direction: column;
    align-items: center;
}
@media (prefers-color-scheme: dark) {
    body { background: radial-gradient(circle at top, #161b22 0%, var(--paper) 60%); }
}

.app-header {
    width: 100%; max-width: 920px; padding: 22px 24px 4px;
    display: flex; align-items: baseline; gap: 12px;
}
.app-brand { font-weight: 700; font-size: 18px; letter-spacing: .02em; }
.app-tag { font-size: 12px; color: rgba(var(--ink-rgb), 0.55); }

.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: 0 10px 30px var(--shadow);
    padding: 26px 28px;
}

/* Login */
.login-wrap { flex: 1; display: flex; align-items: center; width: 100%; }
.login-card { width: 360px; max-width: calc(100vw - 36px); margin: 0 auto; }
.login-card h1 { font-size: 20px; margin: 0 0 4px; }
.login-card .sub { font-size: 13px; color: rgba(var(--ink-rgb), 0.6); margin: 0 0 18px; }

label { display: block; font-size: 12px; font-weight: 600; margin: 12px 0 5px;
    color: rgba(var(--ink-rgb), 0.7); letter-spacing: .02em; }
input[type=text], input[type=password], input[type=file] {
    width: 100%; padding: 10px 12px; font-size: 14px; font-family: inherit;
    color: var(--ink); background: rgba(var(--ink-rgb), 0.04);
    border: 1px solid var(--line); border-radius: 9px;
}
input:focus { outline: 2px solid rgba(var(--accent-rgb), 0.5); outline-offset: 1px; }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: 44px; padding: 10px 18px; margin-top: 16px;
    font-family: inherit; font-size: 14px; font-weight: 600;
    color: #fff; background: var(--accent); border: none; border-radius: 9px;
    cursor: pointer; width: 100%;
}
.btn:hover { filter: brightness(1.06); }
.btn:disabled { opacity: .55; cursor: default; }

.error {
    margin: 4px 0 0; padding: 9px 12px; border-radius: 8px; font-size: 13px;
    color: var(--critical); background: rgba(var(--critical-rgb), 0.12);
    border: 1px solid rgba(var(--critical-rgb), 0.25);
}

/* Landing */
.main-wrap { width: 100%; max-width: 760px; padding: 12px 18px 40px; }
.panel-h { font-size: 15px; font-weight: 700; margin: 0 0 12px; }
.muted { color: rgba(var(--ink-rgb), 0.6); font-size: 13px; }
.upload-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

/* Progress — per-segment, not a bare spinner */
.progress { margin-top: 20px; display: none; }
.progress.active { display: block; }
.steps { display: flex; flex-direction: column; gap: 8px; margin: 12px 0 0; padding: 0; list-style: none; }
.step { display: flex; align-items: center; gap: 10px; font-size: 13px;
    color: rgba(var(--ink-rgb), 0.5); }
.step .dot { width: 10px; height: 10px; border-radius: 50%; flex: none;
    background: rgba(var(--ink-rgb), 0.18); }
.step.done { color: var(--ink); }
.step.done .dot { background: var(--low); }
.step.active { color: var(--ink); font-weight: 600; }
.step.active .dot { background: var(--accent); box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.18); }

.notice { margin-top: 16px; padding: 11px 14px; border-radius: 9px; font-size: 13px; display: none; }
.notice.show { display: block; }
.notice.err { color: var(--critical); background: rgba(var(--critical-rgb), 0.12);
    border: 1px solid rgba(var(--critical-rgb), 0.25); }
.notice.ok { color: var(--low); background: rgba(var(--low-rgb), 0.14);
    border: 1px solid rgba(var(--low-rgb), 0.25); }

.app-footer { width: 100%; max-width: 920px; padding: 18px 24px; margin-top: auto;
    font-size: 11px; color: rgba(var(--ink-rgb), 0.45); }
.logout { color: var(--accent); text-decoration: none; font-size: 12px; }