/* Keyfront – modernes Basis-Stylesheet (Light + Dark).
   Layout & Komponenten nutzen CSS-Variablen; die Palette steht in app.css. */

:root {
    /* Palette-Defaults (von app.css überschreibbar) */
    --kf-accent:          #2563eb;
    --kf-accent-hover:    #1d4ed8;
    --kf-accent-contrast: #ffffff;
    --kf-accent-ring:     rgba(37, 99, 235, .25);

    /* Flächen / Text (Light) */
    --kf-bg-1:    #eef2f9;
    --kf-bg-2:    #f8fafc;
    --kf-surface: #ffffff;
    --kf-text:    #0f172a;
    --kf-muted:   #64748b;
    --kf-border:  #e2e8f0;
    --kf-input:   #ffffff;

    --kf-error-bg:     #fef2f2;
    --kf-error-text:   #b91c1c;
    --kf-error-border: #fecaca;

    --kf-radius:   16px;
    --kf-radius-s: 10px;
    --kf-shadow:   0 10px 30px rgba(2, 6, 23, .12), 0 2px 6px rgba(2, 6, 23, .06);
    --kf-font:     system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --kf-bg-1:    #0b1220;
        --kf-bg-2:    #0f172a;
        --kf-surface: #111a2e;
        --kf-text:    #e5edf9;
        --kf-muted:   #94a3b8;
        --kf-border:  #25324a;
        --kf-input:   #0e1626;

        --kf-error-bg:     #2a1416;
        --kf-error-text:   #fca5a5;
        --kf-error-border: #5b2326;
        --kf-shadow:       0 12px 34px rgba(0, 0, 0, .5);
    }
}

* { box-sizing: border-box; }

html { color-scheme: light dark; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--kf-font);
    color: var(--kf-text);
    background: radial-gradient(1200px 600px at 50% -10%, var(--kf-bg-2), var(--kf-bg-1));
    -webkit-font-smoothing: antialiased;
}

.kf-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    gap: 16px;
}

.kf-card {
    width: 100%;
    max-width: 420px;
    background: var(--kf-surface);
    border: 1px solid var(--kf-border);
    border-radius: var(--kf-radius);
    box-shadow: var(--kf-shadow);
    padding: 32px 28px;
    animation: kf-in .35s ease;
}

@keyframes kf-in {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: none; }
}

.kf-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 18px;
}
.kf-logo img { height: 44px; width: auto; }

.kf-card h1 {
    margin: 0 0 18px;
    font-size: 1.4rem;
    font-weight: 650;
    text-align: center;
    letter-spacing: -.01em;
}

/* Identitätsanzeige im Modus-B-Flow */
.kf-identity {
    display: flex;
    flex-direction: column;
    gap: 2px;
    background: color-mix(in srgb, var(--kf-accent) 8%, var(--kf-surface));
    border: 1px solid color-mix(in srgb, var(--kf-accent) 22%, var(--kf-border));
    border-radius: var(--kf-radius-s);
    padding: 10px 14px;
    margin-bottom: 20px;
    font-size: .9rem;
}
.kf-identity strong { font-weight: 650; }
.kf-identity a { font-size: .82rem; color: var(--kf-accent); text-decoration: none; }
.kf-identity a:hover { text-decoration: underline; }

/* Formular */
.kf-form { display: flex; flex-direction: column; gap: 16px; }

.kf-field { display: flex; flex-direction: column; gap: 6px; }
.kf-field > span {
    font-size: .82rem;
    font-weight: 550;
    color: var(--kf-muted);
}
.kf-field input {
    width: 100%;
    padding: 12px 14px;
    font-size: 1rem;
    color: var(--kf-text);
    background: var(--kf-input);
    border: 1px solid var(--kf-border);
    border-radius: var(--kf-radius-s);
    transition: border-color .15s, box-shadow .15s;
}
.kf-field input::placeholder { color: var(--kf-muted); }
.kf-field input:focus {
    outline: none;
    border-color: var(--kf-accent);
    box-shadow: 0 0 0 4px var(--kf-accent-ring);
}

.kf-button {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--kf-accent-contrast);
    background: var(--kf-accent);
    border: none;
    border-radius: var(--kf-radius-s);
    cursor: pointer;
    transition: background .15s, transform .05s;
    box-shadow: 0 6px 16px var(--kf-accent-ring);
}
.kf-button:hover { background: var(--kf-accent-hover); }
.kf-button:active { transform: translateY(1px); }

/* Checkboxen (Remember) */
.kf-check {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: .88rem;
    color: var(--kf-muted);
}
.kf-check input { width: 16px; height: 16px; accent-color: var(--kf-accent); }

/* Links */
.kf-links { margin: 16px 0 0; text-align: center; font-size: .88rem; }
.kf-links a { color: var(--kf-accent); text-decoration: none; }
.kf-links a:hover { text-decoration: underline; }

/* Alerts */
.kf-alert {
    padding: 11px 14px;
    border-radius: var(--kf-radius-s);
    font-size: .9rem;
    margin-bottom: 16px;
}
.kf-alert-error {
    background: var(--kf-error-bg);
    color: var(--kf-error-text);
    border: 1px solid var(--kf-error-border);
}

/* TOTP-QR + Secret */
.kf-qr { text-align: center; margin: 8px 0 14px; }
.kf-qr img {
    background: #fff;               /* QR bleibt im Dark-Mode scanbar */
    padding: 10px;
    border-radius: var(--kf-radius-s);
    border: 1px solid var(--kf-border);
}
.kf-secret { text-align: center; font-size: .85rem; color: var(--kf-muted); }
.kf-secret code, .kf-codes code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    background: color-mix(in srgb, var(--kf-accent) 8%, var(--kf-surface));
    border: 1px solid var(--kf-border);
    border-radius: 8px;
    padding: 3px 8px;
}

/* Backup-Codes */
.kf-codes {
    list-style: none;
    padding: 0;
    margin: 16px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.kf-codes li { text-align: center; }
.kf-codes code { display: block; font-size: 1.02rem; letter-spacing: .04em; padding: 8px; }

/* Fließtext in Dialogen */
.kf-card p { color: var(--kf-muted); font-size: .92rem; line-height: 1.5; }

/* Footer */
.kf-footer { color: var(--kf-muted); font-size: .8rem; opacity: .8; }
.kf-footer a { color: inherit; }

@media (max-width: 480px) {
    .kf-card { padding: 24px 18px; border-radius: 14px; }
}