:root {
    --ink: #e8eef7;
    --muted: #9aadc2;
    --panel: rgba(8, 22, 42, 0.82);
    --accent: #f0c43c;
    --accent-ink: #141414;
    --danger: #ff6b6b;
    --ring: rgba(240, 196, 60, 0.55);
    --font: "DM Sans", system-ui, sans-serif;
    --display: "Syne", "DM Sans", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }

.login-page {
    position: relative;
    min-height: 100%;
    font-family: var(--font);
    color: var(--ink);
    background:
        radial-gradient(1200px 700px at 15% 90%, #0d4a5c 0%, transparent 55%),
        radial-gradient(900px 600px at 85% 10%, #1a3a6e 0%, transparent 50%),
        linear-gradient(160deg, #061018 0%, #0b1f3a 45%, #082a36 100%);
}

.login-lang {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 2;
}

.login-lang .lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.login-lang .lang-flag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.15rem;
    border-radius: 3px;
    border: 2px solid transparent;
    background: rgba(8, 22, 42, 0.45);
    text-decoration: none;
    line-height: 0;
    opacity: 0.8;
}

.login-lang .lang-flag:hover {
    opacity: 1;
    background: rgba(8, 22, 42, 0.75);
}

.login-lang .lang-flag.is-active {
    opacity: 1;
    border-color: var(--accent);
    box-shadow: 0 0 0 1px rgba(240, 196, 60, 0.35);
}

.login-lang .lang-flag-img {
    display: block;
    width: 28px;
    height: 19px;
    border-radius: 2px;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.2);
    object-fit: cover;
}

.login-shell {
    min-height: 100%;
    min-height: 100dvh;
    display: grid;
    place-items: center;
    padding: 2rem 1rem;
    padding-left: max(1rem, env(safe-area-inset-left, 0px));
    padding-right: max(1rem, env(safe-area-inset-right, 0px));
    padding-bottom: max(2rem, env(safe-area-inset-bottom, 0px));
}

.login-panel {
    width: min(360px, 100%);
    background: var(--panel);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    padding: 2rem 1.75rem 1.75rem;
    backdrop-filter: blur(10px);
}

@media (max-width: 480px) {
    .login-panel {
        padding: 1.5rem 1.15rem 1.25rem;
    }
    .brand-logo {
        width: min(220px, 100%);
    }
    .form-control,
    .btn-signin {
        font-size: 16px; /* evita zoom automático iOS */
        min-height: 2.75rem;
    }
}

.brand-lockup {
    display: flex;
    justify-content: center;
    margin-bottom: 0.25rem;
}

.brand-logo {
    display: block;
    width: min(260px, 100%);
    height: auto;
    object-fit: contain;
}

.brand-tag {
    margin: 0.5rem 0 1.5rem;
    color: var(--muted);
    font-size: 0.92rem;
    text-align: center;
}

.login-form { display: grid; gap: 0.75rem; }

.form-control {
    width: 100%;
    border: 2px solid transparent;
    border-radius: 3px;
    padding: 0.65rem 0.8rem;
    font: inherit;
    font-size: 1rem;
    background: #fff;
    color: #111;
}

.form-control:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--ring);
}

.btn-signin {
    margin-top: 0.35rem;
    border: 0;
    border-radius: 3px;
    padding: 0.7rem 1rem;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    background: var(--accent);
    color: var(--accent-ink);
}

.btn-signin:hover {
    box-shadow: 0 0 0 2px #1a3a6e;
}

.alert {
    margin: 0 0 1rem;
    padding: 0.65rem 0.85rem;
    border-radius: 3px;
    font-size: 0.9rem;
}

.alert-danger {
    background: rgba(211, 47, 47, 0.25);
    border: 1px solid rgba(255, 107, 107, 0.45);
    color: #ffe5e5;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}