/* Ανοιχτόχρωμο θέμα by default, σκοτεινό με <html data-theme="dark"> (βλ. fragments/layout.html :: pwa). */
:root {
    color-scheme: light;
    --bg: #f1f5f9;
    --bg-gradient: linear-gradient(135deg, #e0f2fe 0%, #f1f5f9 100%);
    --card-bg: #ffffff;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --on-accent: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --border: #cbd5e1;
    --input-bg: #ffffff;
    --sunken-bg: #f8fafc;
    --shadow: rgba(15, 23, 42, 0.12);
    --error: #dc2626;
    --success: #15803d;
}
/* Σκοτεινό = το "επιχειρησιακό" θέμα της εφαρμογής (βλ. layout.css / ops-theme.css): χρυσό accent. */
:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #06060c;
    --bg-gradient: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(212, 175, 55, 0.12), transparent 70%), #06060c;
    --card-bg: rgba(12, 14, 26, 0.92);
    --accent: #d4af37;
    --accent-hover: #f0d060;
    --on-accent: #0a0a0f;
    --text: #e8e6e0;
    --muted: #9b978e;
    --border: rgba(212, 175, 55, 0.22);
    --input-bg: #08080f;
    --sunken-bg: #08080f;
    --shadow: rgba(0, 0, 0, 0.7);
    --error: #ff6b6b;
    --success: #00e676;
}
/* Αχνό πλέγμα πίσω από την κάρτα σύνδεσης. */
:root[data-theme="dark"] body::before {
    content: ""; position: fixed; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(212, 175, 55, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(212, 175, 55, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
}
:root[data-theme="dark"] .card {
    position: relative; /* πάνω από το πλέγμα */
    border: 1px solid var(--border); box-shadow: 0 4px 40px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(212, 175, 55, 0.08);
}
:root[data-theme="dark"] .logo { box-shadow: 0 0 0 1px rgba(212, 175, 55, 0.45), 0 0 32px rgba(212, 175, 55, 0.18); }
* { box-sizing: border-box; }
body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body, -apple-system, "Segoe UI", Roboto, Arial, sans-serif);
    background: var(--bg-gradient);
    color: var(--text);
}
.card {
    background: var(--card-bg);
    padding: 2.5rem 2.25rem;
    border-radius: 12px;
    box-shadow: 0 10px 40px var(--shadow);
    width: 100%;
    max-width: 360px;
}
.logo {
    display: block;
    width: 160px;
    height: 160px;
    object-fit: cover;
    margin: 0 auto 1.25rem;
    border-radius: 50%;
}
h1 {
    font-size: 1.4rem;
    margin: 0 0 0.25rem;
    text-align: center;
}
p.subtitle {
    text-align: center;
    color: var(--muted);
    margin: 0 0 1.75rem;
    font-size: 0.9rem;
}
label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 0.35rem;
    color: var(--muted);
}
input[type="text"], input[type="password"] {
    width: 100%;
    padding: 0.65rem 0.75rem;
    margin-bottom: 1.1rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--input-bg);
    color: var(--text);
    font-size: 0.95rem;
}
input:focus {
    outline: none;
    border-color: var(--accent);
}
button {
    width: 100%;
    padding: 0.7rem;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: var(--on-accent);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}
button:hover { background: var(--accent-hover); }
.msg {
    text-align: center;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    padding: 0.5rem;
    border-radius: 6px;
}
.msg.error { background: rgba(248,113,113,0.12); color: var(--error); }
.msg.success { background: rgba(74,222,128,0.12); color: var(--success); }

/* --- 2FA (two-factor*.html) --- */
.card.wide { max-width: 440px; }
.hint { color: var(--muted); font-size: 0.8rem; margin: 0.75rem 0; }
.steps { padding-left: 1.2rem; margin: 0 0 0.75rem; font-size: 0.9rem; }
.qr { width: 200px; margin: 0 auto 0.75rem; }
.qr svg { display: block; width: 100%; height: auto; border-radius: 6px; }
.manual-key, .codes {
    font-family: var(--font-hud, ui-monospace, "Cascadia Mono", Consolas, monospace);
    background: var(--sunken-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.6rem 0.75rem;
}
.manual-key { text-align: center; letter-spacing: 0.05em; word-break: break-all; margin: 0 0 1.25rem; }
.codes {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.4rem 1rem;
    margin: 0 0 1.25rem;
    text-align: center;
}
button.link-button {
    background: none;
    color: var(--muted);
    font-weight: 400;
    margin-top: 0.75rem;
    padding: 0.4rem;
}
button.link-button:hover { background: none; color: var(--text); text-decoration: underline; }
a.button {
    display: block;
    text-align: center;
    padding: 0.7rem;
    border-radius: 8px;
    background: var(--accent);
    color: var(--on-accent);
    font-weight: 600;
    text-decoration: none;
}
a.button:hover { background: var(--accent-hover); }