/* ============================================================
   TANCAT — Estilos v2: LOGIN (pages/login.html)
   Archivo: frontend/assets/css/login.css

   Rediseño 2026-10-29. Mismo lenguaje que el panel v2: panel de marca
   azul noche (como el header y la barra lateral) y el formulario en una
   tarjeta clara. Acento: el rojo de la marca TANCAT.

   Reemplazó a styles.css (borrado el 2026-10-29).
   ============================================================ */

:root {
    --lg-noche:        #0b1526;
    --lg-noche-2:      #0f1c31;
    --lg-borde-noche:  rgba(255, 255, 255, 0.08);
    --lg-texto-noche:  #c5d0e0;
    --lg-suave-noche:  #7586a0;

    --lg-fondo:        #f0f4f8;
    --lg-superficie:   #ffffff;
    --lg-borde:        #d4dce8;
    --lg-borde-hover:  #b8c4d6;
    --lg-texto:        #0f172a;
    --lg-texto-2:      #475569;
    --lg-texto-3:      #94a3b8;

    --lg-marca:        #e5262f;
    --lg-marca-hover:  #c81e26;
    --lg-marca-suave:  rgba(229, 38, 47, 0.12);

    --lg-ok:           #15803d;
    --lg-ok-suave:     #f0fdf4;
    --lg-ok-borde:     #86efac;
    --lg-error:        #b91c1c;
    --lg-error-suave:  #fef2f2;
    --lg-error-borde:  #fca5a5;
    --lg-info:         #1d4ed8;
    --lg-info-suave:   #eff6ff;
    --lg-info-borde:   #93c5fd;

    --lg-sans: 'DM Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --lg-mono: 'Space Mono', ui-monospace, 'Cascadia Mono', monospace;
    --lg-radio: 8px;
    --lg-radio-lg: 12px;
}

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

html, body { margin: 0; padding: 0; }

body {
    min-height: 100vh;
    font-family: var(--lg-sans);
    color: var(--lg-texto);
    background: var(--lg-fondo);
    -webkit-font-smoothing: antialiased;
}

/* ====================================
   LAYOUT: marca | formulario
   ==================================== */
.login-layout {
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(360px, 44%) 1fr;
}

/* ====================================
   PANEL DE MARCA
   ==================================== */
.login-marca {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 32px;
    padding: 28px 48px;
    color: var(--lg-texto-noche);
    background:
        radial-gradient(circle at 85% 12%, rgba(229, 38, 47, 0.16), transparent 42%),
        radial-gradient(circle at 10% 90%, rgba(56, 120, 200, 0.18), transparent 45%),
        linear-gradient(160deg, var(--lg-noche) 0%, var(--lg-noche-2) 100%);
    overflow: hidden;
}

/* Líneas de cancha de fondo, muy sutiles */
.login-marca::after {
    content: '';
    position: absolute;
    right: -120px;
    bottom: -120px;
    width: 380px;
    height: 380px;
    border: 2px solid rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    box-shadow: 0 0 0 60px rgba(255, 255, 255, 0.015);
    pointer-events: none;
}

.login-volver {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 36px;
    padding: 0 14px 0 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--lg-texto-noche);
    text-decoration: none;
    border: 1px solid var(--lg-borde-noche);
    border-radius: 999px;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.login-volver svg { width: 16px; height: 16px; }

.login-volver:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.18);
}

.login-volver:focus-visible,
.btn-clientes:focus-visible,
.link-suave:focus-visible {
    outline: 2px solid var(--lg-marca);
    outline-offset: 2px;
}

.marca-centro {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 22px;
    max-width: 440px;
    position: relative;
    z-index: 1;
}

.marca-logo { display: flex; align-items: center; gap: 14px; }

.marca-icono {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--lg-mono);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--lg-noche);
    background: #ffffff;
    border-radius: 12px;
    box-shadow: inset 0 -4px 0 var(--lg-marca), 0 10px 30px rgba(0, 0, 0, 0.25);
}

.marca-nombre {
    font-family: var(--lg-mono);
    font-size: 1.9rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    line-height: 1.1;
    color: #ffffff;
}

.marca-sub {
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--lg-suave-noche);
}

.marca-texto {
    margin: 0;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--lg-texto-noche);
}

.marca-sedes {
    padding-top: 20px;
    border-top: 1px solid var(--lg-borde-noche);
}

.marca-sedes[hidden] { display: none; }

.marca-sedes-titulo {
    margin-bottom: 10px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--lg-suave-noche);
}

.marca-sedes ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }

.marca-sedes li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.marca-sedes li::before {
    content: '';
    width: 8px;
    height: 8px;
    margin-top: 7px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--lg-marca);
    box-shadow: 0 0 0 3px var(--lg-marca-suave);
}

.sede-nombre { display: block; font-size: 0.92rem; font-weight: 600; color: #ffffff; }
.sede-direccion { display: block; font-size: 0.82rem; color: var(--lg-suave-noche); }

.marca-pie {
    font-size: 0.75rem;
    color: var(--lg-suave-noche);
    position: relative;
    z-index: 1;
}

/* ====================================
   PANEL DEL FORMULARIO
   ==================================== */
.login-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 36px 34px 30px;
    background: var(--lg-superficie);
    border: 1px solid var(--lg-borde);
    border-radius: var(--lg-radio-lg);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 12px 32px rgba(15, 23, 42, 0.08);
    animation: lgEntrada 0.35s ease-out;
}

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

.login-encabezado { margin-bottom: 22px; }

.login-encabezado h1 {
    margin: 0 0 6px;
    font-family: var(--lg-mono);
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--lg-texto);
}

.login-encabezado p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--lg-texto-2);
}

/* ====================================
   AVISOS (error / éxito / información)
   ==================================== */
.aviso {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 18px;
    padding: 12px 12px 12px 14px;
    border: 1px solid;
    border-left-width: 4px;
    border-radius: var(--lg-radio);
    animation: lgAviso 0.25s ease-out;
}

.aviso[hidden] { display: none; }

@keyframes lgAviso {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: none; }
}

.aviso-icono {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #ffffff;
}

.aviso-icono svg { width: 15px; height: 15px; }

.aviso-cuerpo {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-top: 2px;
}

.aviso-titulo { font-size: 0.88rem; font-weight: 700; }
.aviso-mensaje { font-size: 0.84rem; line-height: 1.45; color: var(--lg-texto-2); }

.aviso-cerrar {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    padding: 0;
    font-size: 1.2rem;
    line-height: 1;
    color: var(--lg-texto-3);
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.aviso-cerrar:hover { color: var(--lg-texto); background: rgba(15, 23, 42, 0.06); }

.aviso-error   { background: var(--lg-error-suave); border-color: var(--lg-error-borde); border-left-color: var(--lg-error); }
.aviso-error   .aviso-icono  { background: var(--lg-error); }
.aviso-error   .aviso-titulo { color: var(--lg-error); }

.aviso-exito   { background: var(--lg-ok-suave); border-color: var(--lg-ok-borde); border-left-color: var(--lg-ok); }
.aviso-exito   .aviso-icono  { background: var(--lg-ok); }
.aviso-exito   .aviso-titulo { color: var(--lg-ok); }

.aviso-info    { background: var(--lg-info-suave); border-color: var(--lg-info-borde); border-left-color: var(--lg-info); }
.aviso-info    .aviso-icono  { background: var(--lg-info); }
.aviso-info    .aviso-titulo { color: var(--lg-info); }

/* El de éxito no se cierra: está redirigiendo */
.aviso-exito .aviso-cerrar { display: none; }

/* Barra de progreso del aviso de éxito mientras redirige */
.aviso-exito .aviso-cuerpo::after {
    content: '';
    display: block;
    height: 3px;
    margin-top: 8px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--lg-ok) 0 0) no-repeat, rgba(21, 128, 61, 0.15);
    background-size: 0 100%;
    animation: lgProgreso 0.8s linear forwards;
}

@keyframes lgProgreso { to { background-size: 100% 100%; } }

/* El formulario "tiembla" con un error */
.login-card.sacudir { animation: lgSacudir 0.35s ease; }

@keyframes lgSacudir {
    0%, 100% { transform: none; }
    20%      { transform: translateX(-6px); }
    40%      { transform: translateX(6px); }
    60%      { transform: translateX(-4px); }
    80%      { transform: translateX(4px); }
}

/* ====================================
   CAMPOS
   ==================================== */
.campo { margin-bottom: 16px; }

.campo label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--lg-texto-2);
}

.campo-control { position: relative; }

.campo-icono {
    position: absolute;
    left: 12px;
    top: 50%;
    width: 18px;
    height: 18px;
    transform: translateY(-50%);
    color: var(--lg-texto-3);
    pointer-events: none;
    transition: color 0.2s;
}

.campo input {
    width: 100%;
    height: 44px;
    padding: 0 44px 0 40px;
    font-family: var(--lg-sans);
    font-size: 0.95rem;
    color: var(--lg-texto);
    background: #f8fafc;
    border: 1px solid var(--lg-borde);
    border-radius: var(--lg-radio);
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.campo input::placeholder { color: var(--lg-texto-3); }

.campo input:hover { border-color: var(--lg-borde-hover); }

.campo input:focus {
    outline: none;
    background: #ffffff;
    border-color: var(--lg-noche);
    box-shadow: 0 0 0 3px rgba(11, 21, 38, 0.1);
}

.campo-control:focus-within .campo-icono { color: var(--lg-noche); }

.campo input[aria-invalid="true"] {
    border-color: var(--lg-error);
    background: var(--lg-error-suave);
}

.campo input[aria-invalid="true"]:focus { box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.12); }

.campo-error {
    margin-top: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--lg-error);
}

.campo-error[hidden] { display: none; }

.password-toggle {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    color: var(--lg-texto-3);
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.password-toggle svg { width: 18px; height: 18px; }
.password-toggle:hover { color: var(--lg-texto); background: rgba(15, 23, 42, 0.05); }
.password-toggle .ojo-cerrado { display: none; }
.password-toggle[aria-pressed="true"] .ojo-abierto { display: none; }
.password-toggle[aria-pressed="true"] .ojo-cerrado { display: block; }

.login-fila {
    display: flex;
    justify-content: flex-end;
    margin: -4px 0 18px;
}

.link-suave {
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--lg-texto-2);
    text-decoration: none;
    border-radius: 4px;
}

.link-suave:hover { color: var(--lg-marca); text-decoration: underline; }

/* ====================================
   BOTONES
   ==================================== */
.login-btn {
    width: 100%;
    height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--lg-sans);
    font-size: 0.95rem;
    font-weight: 700;
    color: #ffffff;
    background: var(--lg-marca);
    border: 1px solid var(--lg-marca);
    border-radius: var(--lg-radio);
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(229, 38, 47, 0.25);
    transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
}

.login-btn:hover:not(:disabled) { background: var(--lg-marca-hover); border-color: var(--lg-marca-hover); }
.login-btn:active:not(:disabled) { transform: translateY(1px); }
.login-btn:focus-visible { outline: 3px solid rgba(229, 38, 47, 0.35); outline-offset: 2px; }
.login-btn:disabled { opacity: 0.75; cursor: progress; box-shadow: none; }

.btn-loading { display: inline-flex; align-items: center; gap: 8px; }
.btn-loading[hidden] { display: none; }

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: lgGirar 0.7s linear infinite;
}

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

.login-separador {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 24px 0 14px;
    font-size: 0.78rem;
    color: var(--lg-texto-3);
}

.login-separador::before,
.login-separador::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--lg-borde);
}

.btn-clientes {
    width: 100%;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--lg-texto);
    text-decoration: none;
    background: #ffffff;
    border: 1px solid var(--lg-borde);
    border-radius: var(--lg-radio);
    transition: background 0.2s, border-color 0.2s;
}

.btn-clientes svg { width: 18px; height: 18px; color: var(--lg-texto-2); }
.btn-clientes:hover { background: #f8fafc; border-color: var(--lg-borde-hover); }

/* ====================================
   RESPONSIVE
   ==================================== */
@media (max-width: 900px) {
    .login-layout { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }

    .login-marca {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 14px 16px;
    }

    .marca-centro { flex: none; max-width: none; }
    .marca-icono { width: 36px; height: 36px; font-size: 1.1rem; border-radius: 9px; }
    .marca-nombre { font-size: 1.15rem; }
    .marca-texto,
    .marca-sedes,
    .marca-pie,
    .login-marca::after { display: none; }

    /* En celular el botón de volver va a la derecha de la marca */
    .login-volver { order: 2; align-self: center; }

    .login-panel { align-items: flex-start; padding: 24px 16px 32px; }
    .login-card { padding: 28px 22px 24px; }
}

@media (max-width: 400px) {
    .marca-sub { display: none; }
    .login-volver { padding: 0 12px; font-size: 0.8rem; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
}