:root {
    --bg:      #070B14;
    --neon:    #B7FF00;
    --purple:  #A855F7;
    --fuchsia: #D946EF;
    --border:  rgba(255,255,255,0.08);
    --text:    #F1F5F9;
    --muted:   #64748B;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    overflow: hidden;
}

#bgCanvas, #spaceCanvas {
    position: fixed;
    inset: 0;
    pointer-events: none;
}
#bgCanvas  { z-index: 0; }
#spaceCanvas { z-index: 1; }

.login-wrap {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    position: relative;
    width: 100%;
    max-width: 390px;
    background: rgba(7,11,20,0.82);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 40px 36px;
    backdrop-filter: blur(40px);
    box-shadow:
        0 0 0 1px rgba(183,255,0,0.06),
        0 40px 100px rgba(0,0,0,0.75),
        inset 0 1px 0 rgba(255,255,255,0.06);
    animation: cardIn .5s cubic-bezier(.16,1,.3,1) both;
    overflow: visible;
}

@keyframes cardIn {
    from { opacity:0; transform:translateY(20px) scale(.97); }
    to   { opacity:1; transform:translateY(0) scale(1); }
}

/* Resplandor detrás del logo */
.logo-glow {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle,
        rgba(183,255,0,0.4) 0%,
        rgba(168,85,247,0.3) 35%,
        rgba(217,70,239,0.15) 60%,
        transparent 100%
    );
    filter: blur(22px);
    pointer-events: none;
    animation: glowPulse 3s ease-in-out infinite;
    z-index: 0;
}

@keyframes glowPulse {
    0%,100% { opacity:.7; transform:translateX(-50%) scale(1);    }
    50%      { opacity:1;  transform:translateX(-50%) scale(1.2);  }
}

.brand {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 28px;
}

.brand-logo {
    width: 90px;
    height: 90px;
    max-width: 90px;
    object-fit: contain;
    display: block;
    filter: drop-shadow(0 0 16px rgba(183,255,0,0.35)) drop-shadow(0 0 32px rgba(168,85,247,0.25));
    animation: logoFloat 4s ease-in-out infinite;
}

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

.brand-tag {
    font-family: 'Syne', sans-serif;
    font-size: 11px;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: 4px;
    text-transform: uppercase;
}

.alert-error {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(239,68,68,.08);
    border: 1px solid rgba(239,68,68,.25);
    border-radius: 12px;
    padding: 11px 14px;
    font-size: 13px;
    color: #FCA5A5;
    margin-bottom: 18px;
    position: relative;
    z-index: 1;
}

.field { margin-bottom: 14px; position: relative; z-index: 1; }

.field label {
    display: block;
    font-size: 11px;
    font-weight: 500;
    color: var(--muted);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 7px;
}

.input-wrap { position: relative; }

.input-icon {
    position: absolute;
    left: 13px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    pointer-events: none;
}

.input-wrap input {
    width: 100%;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 13px 16px 13px 38px;
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    outline: none;
    transition: border-color .2s, box-shadow .2s, background .2s;
}

.input-wrap input::placeholder { color: var(--muted); }

.input-wrap input:focus {
    background: rgba(183,255,0,0.03);
    border-color: rgba(183,255,0,.35);
    box-shadow: 0 0 0 3px rgba(183,255,0,.07);
}

.btn-login {
    position: relative;
    z-index: 1;
    width: 100%;
    margin-top: 20px;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--neon) 0%, #8FCC00 100%);
    color: #070B14;
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 1px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform .2s, box-shadow .2s;
    box-shadow: 0 0 30px rgba(183,255,0,.2);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 50px rgba(183,255,0,.45);
}

.btn-login:active { transform: translateY(0); }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--neon), var(--purple));
    border-radius: 10px;
}