/* =========================================================================
   login.css — Pantalla de acceso
   Estilos propios, sin Bootstrap ni frameworks externos.
   Comparte los tokens visuales con tablero.css.
   ========================================================================= */

:root {
    --bg:          #0a1020;
    --bg-glow:     #14203a;
    --panel:       #111a2c;
    --panel-2:     #16223a;
    --line:        rgba(255, 255, 255, .08);
    --line-strong: rgba(255, 255, 255, .16);

    --text:        #e8eef7;
    --text-dim:    #9fb0c9;
    --text-faint:  #6b7d97;

    --brand:       #ef6c00;
    --ok:          #22c55e;
    --crit:        #ef4444;

    --radius:      16px;
    --shadow:      0 24px 60px rgba(0, 0, 0, .5);

    --font: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    gap: 16px;

    font-family: var(--font);
    font-size: 15px;
    color: var(--text);
    background:
        radial-gradient(1100px 620px at 15% -10%, var(--bg-glow) 0%, transparent 60%),
        radial-gradient(900px 520px at 100% 0%, #101c33 0%, transparent 55%),
        var(--bg);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
}

/* =========================================================================
   Tarjeta
   ========================================================================= */
.login {
    width: 100%;
    max-width: 384px;
    background: linear-gradient(165deg, var(--panel-2) 0%, var(--panel) 100%);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 34px 30px 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Filete superior con el color de marca */
.login::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--brand), transparent);
}

.login__logo {
    width: 86px;
    height: 86px;
    object-fit: contain;
    margin-bottom: 18px;
    /* Sin fondo ni recorte: la imagen ya viene con transparencia */
    filter: drop-shadow(0 8px 20px rgba(0, 0, 0, .45));
    animation: logo-giro 14s linear infinite;
}

/* Giro en sentido horario */
@keyframes logo-giro {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.login__title {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.login__subtitle {
    margin: 6px 0 26px;
    font-size: 12.5px;
    color: var(--text-faint);
    letter-spacing: .03em;
}

/* =========================================================================
   Campo de código
   ========================================================================= */
.field { text-align: left; }

.field__label {
    display: block;
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 8px;
}

.field__input {
    width: 100%;
    padding: 14px 16px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    background: rgba(0, 0, 0, .28);
    color: var(--text);

    font-family: inherit;
    font-size: 22px;
    font-weight: 700;
    text-align: center;
    letter-spacing: .18em;
    font-variant-numeric: tabular-nums;

    outline: none;
    transition: border-color .16s ease, box-shadow .16s ease, background .16s ease;
    -moz-appearance: textfield;
}

/* Sin flechitas en el input numérico */
.field__input::-webkit-outer-spin-button,
.field__input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.field__input::placeholder {
    color: var(--text-faint);
    font-weight: 400;
    letter-spacing: .1em;
}

.field__input:focus {
    border-color: var(--brand);
    background: rgba(0, 0, 0, .38);
    box-shadow: 0 0 0 3px rgba(239, 108, 0, .18);
}

/* =========================================================================
   Botón
   ========================================================================= */
.login__submit {
    position: relative;
    width: 100%;
    margin-top: 20px;
    padding: 13px 18px;
    border: 0;
    border-radius: 10px;
    background: var(--brand);
    color: #fff;

    font-family: inherit;
    font-size: 13.5px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;

    cursor: pointer;
    box-shadow: 0 8px 22px rgba(239, 108, 0, .28);
    transition: background .16s ease, transform .12s ease, box-shadow .16s ease;
}

.login__submit:hover  { background: #ff7d1a; box-shadow: 0 10px 26px rgba(239, 108, 0, .38); }
.login__submit:active { transform: translateY(1px); box-shadow: 0 4px 14px rgba(239, 108, 0, .3); }

/* =========================================================================
   Loader
   El envío del formulario consulta la base, así que el botón pasa a estado
   de espera: se cambia el texto por un spinner y se corta el doble clic.
   ========================================================================= */
.login__submit.is-loading {
    background: #b85602;
    box-shadow: none;
    cursor: progress;
    pointer-events: none;          /* ningún clic más mientras se verifica */
}

.login__submit.is-loading:active { transform: none; }

/* El texto se oculta pero sigue ocupando su lugar: el botón no cambia de alto */
.login__submit.is-loading .login__submit-label { visibility: hidden; }

.login__submit.is-loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 18px;
    margin: -9px 0 0 -9px;
    border: 2px solid rgba(255, 255, 255, .3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spinner .7s linear infinite;
}

@keyframes spinner {
    to { transform: rotate(360deg); }
}

/* El filete de la tarjeta se convierte en una barra que recorre el ancho */
.login.is-busy::before {
    background: linear-gradient(90deg, transparent, var(--brand), transparent);
    background-size: 45% 100%;
    background-repeat: no-repeat;
    animation: filete 1.1s ease-in-out infinite;
}

@keyframes filete {
    from { background-position: -45% 0; }
    to   { background-position: 145% 0; }
}

/* Campo bloqueado durante la espera (readonly, no disabled: el código debe viajar) */
.field__input:read-only {
    color: var(--text-dim);
    border-color: var(--line);
    box-shadow: none;
}

.login__foot {
    margin: 22px 0 0;
    font-size: 10.5px;
    letter-spacing: .08em;
    color: var(--text-faint);
}

/* =========================================================================
   Mensajes
   Las clases vienen de Controller::mensaje(), que genera el HTML del aviso.
   Se estilan aquí para no depender de Bootstrap.
   ========================================================================= */
.alert {
    position: relative;
    width: 100%;
    max-width: 384px;
    padding: 12px 42px 12px 16px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    background: var(--panel-2);
    color: var(--text);
    font-size: 13.5px;
    text-align: left;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
    animation: alert-in .25s ease both;
}

.alert-danger  { border-color: rgba(239, 68, 68, .5);  background: rgba(90, 22, 24, .92); }
.alert-success { border-color: rgba(34, 197, 94, .45); background: rgba(17, 74, 45, .92); }

/* Botón de cierre: Bootstrap ya no lo dibuja, se reconstruye acá */
.alert .close {
    position: absolute;
    top: 50%;
    right: 8px;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    padding: 0;
    border: 0;
    border-radius: 7px;
    background: transparent;
    color: var(--text-dim);
    font-size: 0;
    cursor: pointer;
    transition: background .16s ease, color .16s ease;
}

.alert .close:hover { background: rgba(255, 255, 255, .12); color: var(--text); }

.alert .close i { display: none; }          /* icono de FontAwesome, ya no se carga */

.alert .close::after {
    content: "\00d7";
    font-size: 19px;
    line-height: 1;
}

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

@media (max-width: 420px) {
    .login { padding: 28px 20px 24px; }
    .login__logo { width: 72px; height: 72px; }
}

@media (prefers-reduced-motion: reduce) {
    .alert { animation: none; }
    .login__logo { animation: none; }
    .login__submit:active { transform: none; }
    .login.is-busy::before { animation: none; }

    /* El spinner deja de girar pero el botón sigue marcando la espera */
    .login__submit.is-loading::after {
        animation: none;
        border-top-color: rgba(255, 255, 255, .3);
        border-right-color: #fff;
    }
}