/* ============================================================
   LEBSEL MEDICAL — LOGIN "NEGATOSCOPIO"
   Una placa retroiluminada flotando en la sala de lectura oscura.
   Comparte el sistema visual de la home (home.css).
   ============================================================ */

@font-face {
    font-family: "Atkinson Hyperlegible Next";
    src: url("../fonts/atkinson-hyperlegible-next.825fabef695f.woff2") format("woff2");
    font-weight: 200 800;
    font-style: normal;
    font-display: swap;
}

:root {
    color-scheme: dark;

    --void: #070f1a;
    --void-2: #0a1524;
    --panel: #0e1c30;
    --panel-2: #122740;

    --glow: #53a5b7;
    --glow-bright: #8fdcec;
    --glow-dim: rgba(83, 165, 183, 0.16);

    --signal: #e0672a;
    --signal-strong: #c24f17;

    --ink: #eef4fb;
    --ink-soft: #a4b8ce;
    --ink-faint: #748aa2;

    --danger: #ff9d9d;

    --edge: rgba(143, 220, 236, 0.14);
    --edge-strong: rgba(143, 220, 236, 0.30);

    --mono: "SFMono-Regular", "Cascadia Code", "JetBrains Mono", "Consolas", ui-monospace, monospace;
    --sans: "Atkinson Hyperlegible Next", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--sans);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    background:
        radial-gradient(1000px 600px at 78% -10%, rgba(83, 165, 183, 0.16), transparent 60%),
        radial-gradient(800px 500px at 10% 110%, rgba(224, 103, 42, 0.10), transparent 55%),
        var(--void);
}

.login-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    padding: 1.5rem;
}

/* Rejilla sutil de visor DICOM al fondo */
.login-shell::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    opacity: 0.5;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(143, 220, 236, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(143, 220, 236, 0.04) 1px, transparent 1px);
    background-size: 46px 46px;
    -webkit-mask-image: radial-gradient(circle at 50% 42%, black, transparent 70%);
    mask-image: radial-gradient(circle at 50% 42%, black, transparent 70%);
}

/* ---- Placa retroiluminada ---- */
.login-card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 26rem;
    padding: clamp(1.75rem, 5vw, 2.6rem);
    border-radius: 20px;
    overflow: hidden;
    background: linear-gradient(160deg, var(--panel-2), var(--void-2));
    border: 1px solid var(--edge);
    box-shadow: inset 0 1px 0 rgba(143, 220, 236, 0.08), 0 40px 90px -45px rgba(0, 0, 0, 0.9);
    animation: card-in 0.6s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.login-card::before {
    content: "";
    position: absolute;
    left: 12%;
    right: 12%;
    top: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--glow-bright), transparent);
    box-shadow: 0 0 16px 1px rgba(143, 220, 236, 0.6);
}
@keyframes card-in {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: none; }
}

/* Firma: la línea de escaneo barre la placa una vez al cargar */
.scanbeam {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 90px;
    z-index: 3;
    pointer-events: none;
    background: linear-gradient(180deg, transparent, rgba(143, 220, 236, 0.10) 55%, rgba(143, 220, 236, 0.5) 82%, var(--glow-bright) 100%);
    filter: blur(1px);
    animation: sweep 2.4s cubic-bezier(0.4, 0, 0.2, 1) 0.3s 1 both;
}
@keyframes sweep {
    0% { transform: translateY(-120px); opacity: 0; }
    14% { opacity: 1; }
    86% { opacity: 1; }
    100% { transform: translateY(560px); opacity: 0; }
}

.login-top { text-align: center; margin-bottom: 1.75rem; }

.brand-logo {
    display: inline-grid;
    place-items: center;
    width: 76px;
    height: 76px;
    padding: 6px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 0 0 1px var(--edge-strong), 0 0 24px -6px rgba(143, 220, 236, 0.6);
}
.brand-logo img { width: 100%; height: 100%; object-fit: contain; display: block; }

.tag {
    display: block;
    margin-top: 1.1rem;
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--glow-bright);
}

.login-top h1 {
    margin: 0.5rem 0 0;
    font-size: clamp(1.6rem, 5vw, 2rem);
    font-weight: 800;
    letter-spacing: -0.015em;
}

/* ---- Alerta de error (color semántico, separado del acento) ---- */
.login-alert {
    margin-bottom: 1.25rem;
    padding: 0.85rem 1.1rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 120, 120, 0.4);
    background: rgba(255, 80, 80, 0.1);
    color: var(--danger);
    font-size: 0.92rem;
}
.login-alert p { margin: 0; }
.login-alert p + p { margin-top: 0.35rem; }

/* ---- Formulario ---- */
.login-form { display: grid; gap: 1.1rem; }
.field { display: grid; gap: 0.45rem; }
.field label {
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--ink-soft);
}
.login-form input {
    width: 100%;
    padding: 0.85rem 1rem;
    border-radius: 11px;
    background: var(--void);
    color: var(--ink);
    border: 1px solid var(--edge-strong);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.login-form input::placeholder { color: var(--ink-faint); }
.login-form input:hover { border-color: var(--glow); }
.login-form input:focus {
    outline: none;
    border-color: var(--glow-bright);
    box-shadow: 0 0 0 3px rgba(83, 165, 183, 0.28);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    padding: 0.9rem 1.4rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    border: 1px solid transparent;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}
.btn svg { width: 20px; height: 20px; }
.btn-signal {
    margin-top: 0.4rem;
    background: var(--signal);
    color: #fff;
    box-shadow: 0 10px 30px -10px rgba(224, 103, 42, 0.7);
}
.btn-signal:hover { background: var(--signal-strong); transform: translateY(-2px); box-shadow: 0 16px 36px -12px rgba(224, 103, 42, 0.8); }
.btn-ghost { border-color: var(--edge-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--glow); background: var(--glow-dim); transform: translateY(-2px); }

.login-foot {
    position: relative;
    z-index: 1;
    margin: 0;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    color: var(--ink-faint);
    text-align: center;
}

:focus-visible { outline: 3px solid var(--glow-bright); outline-offset: 3px; border-radius: 6px; }

@media (prefers-reduced-motion: reduce) {
    .login-card { animation: none; }
    .scanbeam { display: none; }
    .btn { transition: none; }
}