/* ============================================================
   Keel dashboard palette — derived from the brand logo.
   Brand:   navy #0A1A2B · blue #2E80D8 · teal #29A9C4 · green #46C37D
   Safety:  red is reserved for the kill switch and the production
            environment banner (do not rebrand these).
   ============================================================ */
:root {
    /* Brand neutrals (navy ramp) */
    --navy-900: #0a1a2b;
    --navy-850: #0e2236;
    --navy-800: #12293f;
    --navy-700: #18324a;
    --navy-650: #1d3a55;
    --navy-600: #244764;

    /* Brand accents */
    --brand-blue: #2e80d8;
    --brand-blue-bright: #3a8ee6;
    --brand-teal: #29a9c4;
    --brand-green: #46c37d;

    /* Semantic aliases used throughout the UI */
    --bg: var(--navy-900);
    --panel: var(--navy-800);
    --panel-2: var(--navy-700);
    --border: var(--navy-600);
    --text: #e8f0f6;
    --muted: #91a7ba;
    --accent: var(--brand-blue);
    --ok: var(--brand-green);

    /* Safety colors — intentionally NOT brand colors */
    --warn: #c9882f;
    --danger: #e0414c;
    --danger-deep: #3a0d11;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: var(--muted); }

/* Environment + mode banner */
.env-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    font-weight: 600;
    letter-spacing: .02em;
    color: #fff;
}
.env-banner .sep { opacity: .5; font-weight: 400; }
/* Non-prod: on-brand navy -> blue. Prod: red alarm (safety, not brand). */
.env-nonprod { background: linear-gradient(90deg, var(--navy-800), var(--brand-blue)); }
.env-prod { background: linear-gradient(90deg, #5b1216, var(--danger)); }
.env-banner .kill-flag {
    margin-left: auto;
    background: #000;
    color: #ff8a8a;
    padding: 2px 10px;
    border-radius: 4px;
    animation: pulse 1.2s infinite;
}
@keyframes pulse { 50% { opacity: .55; } }

/* Shell */
.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
.app-body { display: flex; flex: 1; min-height: 0; }

.app-nav {
    width: 220px;
    background: var(--navy-850);
    border-right: 1px solid var(--border);
    padding: 16px 0;
}
.app-nav .nav-brand {
    font-weight: 800;
    font-size: 22px;
    padding: 0 20px 16px;
    /* Brand wordmark gradient (blue -> teal -> green), echoing the logo. */
    background: linear-gradient(90deg, var(--brand-blue), var(--brand-teal) 55%, var(--brand-green));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.app-nav ul { list-style: none; margin: 0; padding: 0; }
.app-nav li a {
    display: block;
    padding: 9px 20px;
    color: var(--muted);
    border-left: 3px solid transparent;
}
.app-nav li a:hover { background: var(--panel-2); color: var(--text); text-decoration: none; }
.app-nav li a.active { color: var(--text); border-left-color: var(--brand-teal); background: var(--panel-2); }

.app-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.app-topbar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
    padding: 10px 24px;
    border-bottom: 1px solid var(--border);
}
.inline-form { display: inline; }
.btn-link { background: none; border: none; color: var(--accent); cursor: pointer; font: inherit; }
.app-content { padding: 24px; }

/* Cards / pages */
h1 { font-size: 22px; margin: 0 0 6px; }
.page-sub { color: var(--muted); margin: 0 0 20px; }
.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 18px;
    margin-bottom: 16px;
}
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; background: var(--navy-650); color: var(--text); }
/* Semantic status system (DEC-054): green = success/filled, amber = draw/degraded/sized-to-zero,
   red = failure/veto/loss. Use these instead of ad-hoc hex colors in components. */
.sem-good { color: var(--ok); }
.sem-warn { color: var(--warn); }
.sem-bad { color: var(--danger); }
.badge-good { background: rgba(70, 195, 125, 0.16); color: var(--ok); }
.badge-warn { background: rgba(201, 136, 47, 0.16); color: var(--warn); }
.badge-bad { background: rgba(224, 65, 76, 0.16); color: var(--danger); }
.util-bar { display: inline-block; width: 70%; height: 8px; background: var(--navy-650); border-radius: 4px; margin-right: 8px; vertical-align: middle; }
.util-fill { height: 100%; border-radius: 4px; }
.util-fill.good { background: var(--ok); }
.util-fill.warn { background: var(--warn); }
.util-fill.bad { background: var(--danger); }
.stub-note { color: var(--muted); font-size: 13px; }

/* Kill switch (red is intentional — safety control) */
.killswitch {
    position: sticky;
    bottom: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    background: var(--navy-850);
}
.killswitch.engaged { background: var(--danger-deep); border-top-color: var(--danger); }
.ks-status { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.ks-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ok); }
.killswitch.engaged .ks-dot { background: var(--danger); }
.ks-reason { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); padding: 6px 10px; border-radius: 6px; }
.ks-reason-text { color: #ffb3b3; }
.ks-engage { margin-left: auto; background: var(--danger); color: #fff; border: none; padding: 8px 14px; border-radius: 6px; cursor: pointer; font-weight: 700; }
.ks-engage:disabled { opacity: .5; cursor: not-allowed; }
.ks-disengage { margin-left: auto; background: var(--ok); color: #06281a; border: none; padding: 8px 14px; border-radius: 6px; cursor: pointer; font-weight: 700; }

/* Auth pages */
.auth-shell { min-height: 100vh; display: grid; place-items: center;
    background: radial-gradient(1200px 600px at 50% -10%, var(--navy-800), var(--navy-900)); }
.login-card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 28px; width: 360px; }
.login-card h1 {
    margin-bottom: 2px;
    background: linear-gradient(90deg, var(--brand-blue), var(--brand-green));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.login-card label { display: block; margin: 14px 0 4px; color: var(--muted); }
.login-card input[type=email], .login-card input[type=password], .login-card input:not([type]) {
    width: 100%; padding: 9px 10px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; color: var(--text);
}
.login-card input:focus { outline: none; border-color: var(--brand-blue); box-shadow: 0 0 0 2px rgba(46,128,216,.3); }
.login-card .checkbox { display: flex; align-items: center; gap: 8px; }
.login-card button[type=submit] { width: 100%; margin-top: 18px; padding: 10px; background: var(--brand-blue); color: #fff; border: none; border-radius: 6px; font-weight: 700; cursor: pointer; }
.login-card button[type=submit]:hover { background: var(--brand-blue-bright); }
.error { color: #ff8a8a; margin-top: 12px; }
.validation-message { color: #ff8a8a; font-size: 13px; }