/* ==========================================================================
   ESTILOS ADICIONALES: INICIO DE SESIÓN PREMIUM Y DASHBOARD DE USUARIOS
   ========================================================================== */

/* Pantalla de login de pantalla completa */
/* ==============================
   PANTALLA DE LOGIN (moderna / vibrante)
   ============================== */
.login-screen {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: hidden;
    background:
        radial-gradient(1200px 800px at 15% 20%, rgba(99, 102, 241, 0.28), transparent 55%),
        radial-gradient(1000px 700px at 85% 30%, rgba(14, 165, 233, 0.22), transparent 55%),
        radial-gradient(900px 900px at 50% 100%, rgba(16, 185, 129, 0.18), transparent 55%),
        var(--bg-primary);
}

/* Sin orbes animados: el degradado estático del fondo basta y no cuesta nada. */

/* Caja de login — Liquid Glass */
.login-box {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur-strong);
    -webkit-backdrop-filter: var(--glass-blur-strong);
    border: var(--glass-border);
    border-radius: 16px;
    padding: 44px 40px;
    box-shadow: var(--glass-shadow), var(--glass-highlight);
    transition: var(--transition);
    overflow: hidden;
    animation: loginEnter 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* Reflejo especular superior (gloss) que da la sensación de vidrio líquido */
.login-box::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 55%;
    background: var(--glass-sheen);
    pointer-events: none;
    z-index: 0;
}

/* Línea de brillo degradado en el borde superior */
.login-box::after {
    content: '';
    position: absolute;
    top: 0; left: 12%; right: 12%;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.95), transparent);
    z-index: 1;
}

@keyframes loginEnter {
    from { opacity: 0; transform: translateY(24px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.login-box:hover {
    border-color: rgba(129, 140, 248, 0.4);
    box-shadow:
        0 30px 80px -18px rgba(79, 70, 229, 0.45),
        0 10px 28px -12px rgba(30, 41, 90, 0.4),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
    transform: translateY(-4px);
}

/* Marca / logo */
.login-brand {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 28px;
}
.login-logo {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: linear-gradient(135deg, #6366f1, #4f46e5 45%, #0ea5e9);
    box-shadow: 0 12px 30px -8px rgba(79, 70, 229, 0.6), inset 0 1px 0 rgba(255,255,255,0.4);
    margin-bottom: 16px;
    animation: loginLogoFloat 4.5s ease-in-out infinite;
}
.login-logo i { width: 30px; height: 30px; }

@keyframes loginLogoFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-6px); }
}

.login-title {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(120deg, var(--text-primary), var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.1;
}
.login-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
    font-weight: 500;
}

/* Campos con icono */
.login-field { margin-bottom: 18px; position: relative; z-index: 2; }
.login-field label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}
.login-input-wrap { position: relative; }
.login-input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px; height: 18px;
    color: var(--text-muted);
    transition: color 0.25s ease;
    pointer-events: none;
}
.login-input-wrap input {
    width: 100%;
    padding: 15px 16px 15px 46px;
    font-size: 0.95rem;
    color: var(--text-primary);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: 14px;
    outline: none;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.login-input-wrap input::placeholder { color: var(--text-muted); }
.login-input-wrap input:focus {
    border-color: rgba(129, 140, 248, 0.8);
    background: var(--glass-bg-strong);
    box-shadow: 0 0 0 4px var(--primary-glow), inset 0 1px 0 rgba(255, 255, 255, 0.6), 0 8px 20px -10px rgba(79, 70, 229, 0.5);
}
.login-input-wrap input:focus + .login-input-icon,
.login-input-wrap:focus-within .login-input-icon { color: var(--primary); }
.login-input-wrap input:disabled { opacity: 0.6; cursor: not-allowed; }

/* Botón de login con degradado y brillo */
.btn-login {
    position: relative;
    z-index: 2;
    width: 100%;
    margin-top: 8px;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    background: linear-gradient(120deg, #6366f1, #4f46e5 50%, #0ea5e9);
    background-size: 180% 180%;
    box-shadow: 0 12px 28px -10px rgba(79, 70, 229, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.5), inset 0 0 0 1px rgba(255, 255, 255, 0.12);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.25s ease, background-position 0.5s ease;
}
.btn-login i { width: 18px; height: 18px; transition: transform 0.25s ease; }
.btn-login::before {
    content: '';
    position: absolute;
    top: 0; left: -120%;
    width: 60%; height: 100%;
    background: linear-gradient(100deg, transparent, rgba(255,255,255,0.35), transparent);
    transform: skewX(-20deg);
    transition: left 0.6s ease;
}
.btn-login:hover:not(:disabled) {
    background-position: 100% 0;
    transform: translateY(-2px);
    box-shadow: 0 18px 38px -10px rgba(79, 70, 229, 0.75);
}
.btn-login:hover:not(:disabled)::before { left: 130%; }
.btn-login:hover:not(:disabled) i { transform: translateX(4px); }
.btn-login:active:not(:disabled) { transform: translateY(0); }
.btn-login:disabled {
    background: var(--text-muted);
    box-shadow: none;
    cursor: not-allowed;
    opacity: 0.7;
}

/* Mensaje de estado del login (intentos restantes / bloqueo) */
.login-mensaje {
    position: relative;
    z-index: 2;
    margin-bottom: 14px;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.35;
    text-align: center;
    animation: loginShake 0.4s ease;
}

.login-mensaje-error {
    background: rgba(239, 68, 68, 0.12);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.25);
}

@keyframes loginShake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

@media (prefers-reduced-motion: reduce) {
    .login-screen::before, .login-screen::after,
    .login-logo, .login-box, .login-mensaje { animation: none; }
}

/* Grid del administrador de usuarios */
.user-management-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
    align-items: start;
}

@media (max-width: 1024px) {
    .user-management-grid {
        grid-template-columns: 1fr;
    }
}