/* ==========================================================================
   Login + Registro en una sola vista: vidrio sobre el estudio y panel deslizante
   ========================================================================== */

.auth-body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 96px 16px 48px;
    box-sizing: border-box;
    font-family: var(--g-body);
    color: #fff;
    background: #1f2a33 url('../../scroll_world/stills/06_final.webp') center / cover no-repeat fixed;
    position: relative;
}
.auth-body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(70% 60% at 50% 40%, rgba(31, 42, 51, 0.25), rgba(31, 42, 51, 0.7)),
        rgba(31, 42, 51, 0.35);
    z-index: 0;
}
.auth-body *, .auth-body *::before, .auth-body *::after { box-sizing: border-box; }

/* Volver al inicio */
.auth-back {
    position: fixed;
    top: 18px;
    left: 18px;
    z-index: 20;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px 10px 12px;
    border-radius: 999px;
    color: #fff;
    text-decoration: none;
    font-size: 0.86rem;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background 0.25s ease;
}
.auth-back svg { width: 18px; height: 18px; }
.auth-back:hover { background: rgba(255, 255, 255, 0.2); }

/* Mensajes */
.auth-toasts {
    position: fixed;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 30;
    display: grid;
    gap: 8px;
    width: min(460px, calc(100% - 32px));
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.auth-toasts.is-gone { opacity: 0; transform: translate(-50%, -12px); pointer-events: none; }
.auth-toast {
    padding: 12px 18px;
    border-radius: 14px;
    font-size: 0.88rem;
    font-weight: 500;
    color: #fff;
    background: rgba(93, 118, 139, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
    text-align: center;
}
.auth-toast--error, .auth-toast--danger { background: rgba(150, 62, 62, 0.88); animation: auth-shake 0.5s ease; }
.auth-toast--success { background: rgba(63, 125, 92, 0.88); }
.auth-toast--warning { background: rgba(160, 109, 20, 0.88); }
@keyframes auth-shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

/* ---------- Contenedor de vidrio ---------- */
.auth {
    position: relative;
    z-index: 1;
    width: min(980px, 100%);
    height: 640px;
    border-radius: 26px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.auth-panel {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 44px 52px;
    overflow-y: auto;
    scrollbar-width: none;
    transition: opacity 0.7s cubic-bezier(.77, 0, .18, 1), transform 0.9s cubic-bezier(.77, 0, .18, 1), filter 0.7s ease;
}
.auth-panel::-webkit-scrollbar { display: none; }
.auth-panel--login { left: 0; }
.auth-panel--signup { left: 50%; opacity: 0; transform: translateX(80px); filter: blur(6px); pointer-events: none; }

.auth.is-signup .auth-panel--login { opacity: 0; transform: translateX(-80px); filter: blur(6px); pointer-events: none; }
.auth.is-signup .auth-panel--signup { opacity: 1; transform: none; filter: none; pointer-events: auto; }

.auth-form { width: 100%; max-width: 380px; margin: 0 auto; }
.auth-panel--signup .auth-form { max-width: 420px; }

.auth-eyebrow {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--g-sand);
}
.auth-title {
    font-family: var(--g-display);
    font-weight: 700;
    font-size: clamp(1.8rem, 3vw, 2.3rem);
    letter-spacing: 0.02em;
    margin: 8px 0 6px;
    color: #fff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}
.auth-sub { margin: 0 0 34px; font-size: 0.9rem; color: rgba(255, 255, 255, 0.72); }
.auth-panel--signup .auth-sub { margin-bottom: 28px; }

.auth-alert {
    margin: -14px 0 24px;
    padding: 10px 14px;
    border-radius: 12px;
    background: rgba(169, 74, 74, 0.35);
    border: 1px solid rgba(255, 180, 180, 0.4);
    font-size: 0.85rem;
}

/* ---------- Campos (estilo vidrio con etiqueta flotante) ---------- */
.input-group { position: relative; margin-bottom: 30px; }
.auth-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 22px; }
.auth-grid__full { grid-column: 1 / -1; }
.auth-grid .input-group { margin-bottom: 26px; }

.input-group input {
    width: 100%;
    padding: 12px 30px 10px 30px;
    font-family: var(--g-body);
    font-size: 0.95rem;
    color: #fff;
    background: transparent;
    border: none;
    border-bottom: 1.5px solid rgba(255, 255, 255, 0.4);
    border-radius: 0;
    outline: none;
    transition: border-color 0.3s ease;
}
.input-group input:-webkit-autofill,
.input-group input:-webkit-autofill:hover,
.input-group input:-webkit-autofill:focus {
    -webkit-text-fill-color: #fff;
    -webkit-box-shadow: 0 0 0 1000px rgba(31, 42, 51, 0.01) inset;
    transition: background-color 9999s ease-out 0s;
}
.input-group .ig-icon {
    position: absolute;
    left: 0;
    top: 12px;
    width: 18px;
    height: 18px;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.3s ease;
    pointer-events: none;
}
.input-group label {
    position: absolute;
    top: 12px;
    left: 30px;
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.78);
    pointer-events: none;
    transition: all 0.3s ease;
    white-space: nowrap;
}
.input-group input:focus { border-bottom-color: var(--g-sand); }
.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label {
    top: -16px;
    left: 0;
    font-size: 0.74rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--g-sand);
}
.input-group:focus-within .ig-icon,
.input-group input:not(:placeholder-shown) ~ .ig-icon { color: var(--g-sand); }
.input-group .ig-icon:has(~ input:not(:placeholder-shown)) { color: var(--g-sand); }

.ig-eye {
    position: absolute;
    right: 0;
    top: 8px;
    width: 28px;
    height: 28px;
    border: 0;
    padding: 0;
    background: transparent;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: color 0.25s ease;
}
.ig-eye svg { width: 18px; height: 18px; }
.ig-eye:hover, .ig-eye.is-on { color: var(--g-sand); }

.ig-caps, .ig-error {
    display: block;
    position: absolute;
    left: 0;
    top: calc(100% + 4px);
    font-size: 0.72rem;
    line-height: 1.3;
}
.ig-caps { color: #f3d28b; opacity: 0; transform: translateY(-3px); transition: opacity 0.2s ease, transform 0.2s ease; pointer-events: none; }
.ig-caps.is-on { opacity: 1; transform: none; }
.ig-error { color: #ffc2c2; }
.input-group.has-error { margin-bottom: 40px; }
.input-group.has-error input { border-bottom-color: rgba(255, 160, 160, 0.8); }
.input-group.has-error .ig-caps.is-on { display: none; }

.auth-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: -8px 0 26px;
    font-size: 0.78rem;
}
.auth-hint { color: rgba(255, 255, 255, 0.55); }
.auth-link { color: var(--g-sand); text-decoration: none; font-weight: 500; white-space: nowrap; }
.auth-link:hover { text-decoration: underline; color: #e2d2bf; }

/* ---------- Botones ---------- */
.auth-btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(100deg, var(--g-blue) 0%, #7d8f9c 50%, var(--g-sand) 100%);
    background-size: 160% 100%;
    background-position: 0% 0;
    color: #fff;
    font-family: var(--g-body);
    font-size: 0.86rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    cursor: pointer;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
    transition: background-position 0.5s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.auth-btn:hover { background-position: 100% 0; transform: translateY(-1px); box-shadow: 0 14px 30px rgba(200, 179, 155, 0.35); }
.auth-btn:active { transform: translateY(0); }
a.auth-btn { display: block; text-align: center; text-decoration: none; }
.auth-btn:disabled { opacity: 0.75; cursor: wait; }

.auth-switch { display: none; margin: 22px 0 0; text-align: center; font-size: 0.85rem; color: rgba(255, 255, 255, 0.8); }
.auth-switch button {
    border: 0;
    background: none;
    color: var(--g-sand);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    padding: 0 0 0 4px;
}
.auth-switch button:hover { text-decoration: underline; }

/* ---------- Panel deslizante ---------- */
.overlay-panel {
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    z-index: 5;
    overflow: hidden;
    clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
    transition:
        transform 900ms cubic-bezier(.77, 0, .18, 1),
        clip-path 900ms cubic-bezier(.77, 0, .18, 1);
}
.auth.is-signup .overlay-panel {
    transform: translateX(-100%);
    clip-path: polygon(0 0, 86% 0, 100% 100%, 0 100%);
}
.overlay-panel__bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(2px 2px at 72% 18%, rgba(255, 255, 255, 0.9), transparent 60%),
        radial-gradient(1.5px 1.5px at 82% 26%, rgba(255, 255, 255, 0.7), transparent 60%),
        radial-gradient(1.5px 1.5px at 30% 72%, rgba(255, 255, 255, 0.6), transparent 60%),
        radial-gradient(55% 45% at 85% 8%, rgba(255, 255, 255, 0.14), transparent 70%),
        linear-gradient(160deg, var(--g-blue) 0%, var(--g-blue-dark) 42%, #3e5163 58%, #8d7863 84%, var(--g-sand) 100%);
}
.overlay-panel__content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 6px;
    transition: opacity 0.6s ease 0.15s, transform 0.9s cubic-bezier(.77, 0, .18, 1);
}
.overlay-panel__content--to-signup { padding: 0 48px 0 calc(14% + 40px); }
.overlay-panel__content--to-login { padding: 0 calc(14% + 40px) 0 48px; opacity: 0; transform: translateX(-40px); pointer-events: none; }
.auth.is-signup .overlay-panel__content--to-signup { opacity: 0; transform: translateX(40px); pointer-events: none; }
.auth.is-signup .overlay-panel__content--to-login { opacity: 1; transform: none; pointer-events: auto; }
.overlay-logo { width: 132px; height: auto; opacity: 0.95; margin-bottom: 10px; filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.2)); }
.overlay-panel h2 { font-family: var(--g-display); font-size: 1.7rem; margin: 0; color: #fff; }
.overlay-panel p { margin: 6px 0 22px; max-width: 280px; font-size: 0.92rem; line-height: 1.6; color: rgba(255, 255, 255, 0.86); }
.auth-ghost {
    padding: 11px 30px;
    border-radius: 12px;
    border: 1.5px solid rgba(255, 255, 255, 0.75);
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    font-family: var(--g-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.3s ease;
}
.auth-ghost:hover { background: rgba(255, 255, 255, 0.18); transform: translateY(-1px); }

/* ---------- Velo de carga al enviar (login, registro, logout) ---------- */
.auth-loader {
    position: absolute;
    inset: 0;
    z-index: 12;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    border-radius: inherit;
    background:
        radial-gradient(60% 50% at 50% 42%, rgba(93, 118, 139, 0.35), transparent 70%),
        rgba(31, 42, 51, 0.62);
    backdrop-filter: blur(18px) saturate(1.2);
    -webkit-backdrop-filter: blur(18px) saturate(1.2);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.45s ease, visibility 0s linear 0.45s;
}
.auth-loader.is-on { opacity: 1; visibility: visible; transition: opacity 0.45s ease; }
/* El contenido de abajo se desenfoca (el backdrop-filter anidado no alcanza) */
.is-loading > :not(.auth-loader) { filter: blur(6px); transition: filter 0.45s ease; pointer-events: none; }
.auth-loader__mark {
    position: relative;
    width: 128px;
    height: 128px;
    display: grid;
    place-items: center;
}
.auth-loader__mark img {
    width: 74px;
    height: auto;
    filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.25));
    animation: auth-breathe 2.2s ease-in-out infinite;
}
/* Aro fino que gira alrededor del logo (azul → arena) */
.auth-loader__ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: conic-gradient(from 0deg, transparent 0 55%, rgba(200, 179, 155, 0.15) 62%, var(--g-sand) 92%, #fff 100%);
    -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 2px));
            mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 2px));
    animation: auth-rotate 1.4s linear infinite;
}
.auth-loader__mark::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.12);
}
.auth-loader__text {
    margin: 0;
    font-family: var(--g-display);
    font-size: 1.05rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #fff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}
.auth-loader__bar {
    position: relative;
    width: 120px;
    height: 2px;
    border-radius: 2px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.16);
}
.auth-loader__bar::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 40%;
    border-radius: inherit;
    background: linear-gradient(90deg, transparent, var(--g-sand), transparent);
    animation: auth-slide 1.3s ease-in-out infinite;
}
@keyframes auth-rotate { to { transform: rotate(360deg); } }
@keyframes auth-breathe { 0%, 100% { transform: scale(1); opacity: 0.85; } 50% { transform: scale(1.06); opacity: 1; } }
@keyframes auth-slide { from { left: -40%; } to { left: 100%; } }
@media (prefers-reduced-motion: reduce) {
    .auth-loader__mark img, .auth-loader__bar::after { animation: none; }
    .auth-loader__ring { animation-duration: 3s; }
}

/* ---------- Tarjeta simple (cerrar sesión) ---------- */
.auth-card {
    position: relative;
    z-index: 1;
    width: min(460px, 100%);
    padding: 44px 44px 34px;
    border-radius: 26px;
    text-align: center;
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    animation: auth-in 0.6s ease both;
}
.auth-card__logo { width: 96px; height: auto; margin: 0 auto 14px; display: block; opacity: 0.95; filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.25)); }
.auth-card .auth-sub { margin-bottom: 26px; line-height: 1.6; }
.auth-card .auth-sub strong { color: #fff; font-weight: 500; }
.auth-card__list {
    list-style: none;
    margin: 0 0 28px;
    padding: 16px 18px;
    display: grid;
    gap: 10px;
    text-align: left;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 0.86rem;
    color: rgba(255, 255, 255, 0.85);
}
.auth-card__list li { display: flex; align-items: flex-start; gap: 10px; }
.auth-card__list svg { flex: none; width: 18px; height: 18px; margin-top: 1px; color: var(--g-sand); }
.auth-card__actions { display: grid; gap: 12px; }
.auth-card__actions .auth-ghost {
    display: block;
    width: 100%;
    padding: 13px;
    text-align: center;
    text-decoration: none;
}
.auth-card__help {
    margin: 26px 0 0;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ---------- Móvil: un formulario a la vez ---------- */
@media (max-width: 860px) {
    .auth-body { padding: 84px 14px 32px; align-items: flex-start; background-attachment: scroll; }
    .auth { height: auto; }
    .overlay-panel { display: none; }
    .auth-panel { position: relative; width: 100%; left: 0; padding: 36px 24px 32px; overflow: visible; }
    .auth-panel--signup { display: none; transform: none; filter: none; }
    .auth.is-signup .auth-panel--login { display: none; }
    .auth.is-signup .auth-panel--signup { display: flex; animation: auth-in 0.5s ease both; }
    .auth:not(.is-signup) .auth-panel--login { animation: auth-in 0.5s ease both; }
    .auth-panel--login, .auth-panel--signup { opacity: 1; pointer-events: auto; }
    .auth-switch { display: block; }
}
@media (max-width: 480px) {
    .auth-card { padding: 36px 22px 28px; }
    .auth-grid { grid-template-columns: 1fr; }
    .auth-row { flex-direction: column; align-items: flex-start; gap: 6px; }
}
@keyframes auth-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
    .auth-panel, .overlay-panel, .overlay-panel__content { transition: none; }
}

/* ---------- Sin scroll en escritorio: la tarjeta se adapta al alto de la pantalla ---------- */
@media (min-width: 861px) {
    .auth-body { height: 100vh; height: 100dvh; min-height: 0; padding: 70px 16px 20px; overflow: hidden; }
    .auth { height: min(640px, calc(100dvh - 96px)); }
    .auth-panel { padding: 28px 52px; }
}
@media (min-width: 861px) and (max-height: 760px) {
    .auth-sub { margin-bottom: 24px; }
    .auth-panel--signup .auth-sub { margin-bottom: 18px; }
    .input-group { margin-bottom: 24px; }
    .auth-grid .input-group { margin-bottom: 22px; }
    .input-group.has-error { margin-bottom: 32px; }
    .auth-title { font-size: 1.75rem; margin: 6px 0 4px; }
    .auth-row { margin-bottom: 20px; }
    .overlay-logo { width: 104px; }
}
@media (min-width: 861px) and (max-height: 620px) {
    .auth-eyebrow, .auth-panel--signup .auth-sub { display: none; }
    .input-group input { padding-top: 9px; padding-bottom: 8px; }
    .auth-btn { padding: 12px; }
}

/* ---------- Recuperar contraseña (tarjeta simple con formulario) ---------- */
.auth-card .auth-sub strong { overflow-wrap: anywhere; }
.ac-form { text-align: left; margin-top: 6px; }
.ac-form .input-group:last-of-type { margin-bottom: 24px; }
.ac-full { width: 100%; padding: 13px; }
.ac-rules { list-style: none; margin: -12px 0 22px; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 14px; }
.ac-rules li { display: inline-flex; align-items: center; gap: 6px; font-size: 0.78rem; color: rgba(255, 255, 255, 0.7); transition: color 0.2s ease; }
.ac-rules li::before {
    content: "";
    width: 15px;
    height: 15px;
    box-sizing: border-box;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.45);
    transition: all 0.2s ease;
}
.ac-rules li.is-ok { color: #b9e4c9; font-weight: 600; }
.ac-rules li.is-ok::before {
    border-color: #6fbf8e;
    background: #6fbf8e url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 9px no-repeat;
}
.ac-rules li.is-bad { color: #ffc2c2; font-weight: 600; }
.ac-rules li.is-bad::before { border-color: #ffc2c2; }
.ac-ok {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: rgba(111, 191, 142, 0.25);
    border: 1px solid rgba(185, 228, 201, 0.5);
    color: #b9e4c9;
}
.ac-ok svg { width: 28px; height: 28px; }