/* ============ AUTH LAYOUT ============ */
.auth-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr;
    position: relative;
    z-index: 1;
}

.auth-header {
    position: absolute;
    top: 0; left: 0; right: 0;
    padding: 20px var(--gutter);
    z-index: 5;
}
.auth-header .logo { font-size: var(--fs-md); }

.auth-main {
    display: grid;
    place-items: center;
    padding: 100px var(--gutter) 60px;
    min-height: 100vh;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    padding: clamp(24px, 4vw, 40px);
    border-radius: var(--r-xl);
    background: linear-gradient(160deg, rgba(20,42,92,.75), rgba(10,21,48,.92));
    border: 1px solid var(--c-border-strong);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: var(--shadow-md), 0 0 60px rgba(47,128,255,.15);
    animation: cardIn .5s cubic-bezier(.2,.8,.2,1) both;
}
@keyframes cardIn {
    from { opacity: 0; transform: translateY(16px) scale(.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-card__title {
    margin: 0 0 6px;
    font-size: var(--fs-xl);
    font-weight: 800;
    letter-spacing: -.02em;
}
.auth-card__sub {
    margin: 0 0 24px;
    color: var(--c-text-soft);
    font-size: var(--fs-sm);
}

/* ============ FORM ============ */
.form-field { margin-bottom: 16px; }

.form-label {
    display: block;
    font-size: var(--fs-xs);
    font-weight: 600;
    color: var(--c-text-soft);
    margin-bottom: 6px;
    letter-spacing: .02em;
}

.form-input {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--r-md);
    background: rgba(5, 11, 31, .6);
    border: 1px solid var(--c-border-strong);
    color: var(--c-text);
    font-size: var(--fs-md);
    font-family: inherit;
    transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
.form-input::placeholder { color: var(--c-text-dim); }
.form-input:hover { border-color: rgba(122,184,255,.55); }
.form-input:focus {
    outline: none;
    border-color: var(--c-neon-400);
    background: rgba(5, 11, 31, .8);
    box-shadow: 0 0 0 3px rgba(47,128,255,.2);
}
.form-input--error { border-color: #f87171; }
.form-input--error:focus { box-shadow: 0 0 0 3px rgba(248,113,113,.2); }

.form-error {
    display: block;
    color: #fca5a5;
    font-size: var(--fs-xs);
    margin-top: 6px;
}

.form-hint {
    display: block;
    color: var(--c-text-dim);
    font-size: var(--fs-xs);
    margin-top: 6px;
}

/* Показать/скрыть пароль */
.form-password { position: relative; }
.form-password .form-input { padding-right: 44px; }
.form-password__toggle {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: var(--r-sm);
    color: var(--c-text-dim);
    transition: color var(--t-fast), background var(--t-fast);
}
.form-password__toggle:hover { color: var(--c-text); background: rgba(122,184,255,.1); }
.form-password__toggle svg { width: 18px; height: 18px; }

/* Индикатор надёжности пароля */
.pwd-meter {
    display: flex;
    gap: 4px;
    margin-top: 8px;
}
.pwd-meter__bar {
    height: 3px;
    flex: 1;
    border-radius: 2px;
    background: rgba(122,184,255,.15);
    transition: background var(--t-base);
}
.pwd-meter__bar.is-weak   { background: #f87171; }
.pwd-meter__bar.is-medium { background: #fbbf24; }
.pwd-meter__bar.is-strong { background: #4ade80; }

/* Чекбоксы (согласие, remember-me) */
.form-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: var(--fs-sm);
    color: var(--c-text-soft);
    margin-bottom: 16px;
    cursor: pointer;
    user-select: none;
}
.form-check input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
    border-radius: 5px;
    border: 1px solid var(--c-border-strong);
    background: rgba(5,11,31,.6);
    cursor: pointer;
    position: relative;
    transition: background var(--t-fast), border-color var(--t-fast);
}
.form-check input[type="checkbox"]:checked {
    background: var(--g-primary);
    border-color: transparent;
}
.form-check input[type="checkbox"]:checked::after {
    content: "";
    position: absolute;
    left: 5px; top: 2px;
    width: 6px; height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}
.form-check a { color: var(--c-neon-400); }
.form-check a:hover { text-decoration: underline; }

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.form-row .form-check { margin-bottom: 0; }
.form-link {
    color: var(--c-neon-400);
    font-size: var(--fs-sm);
    font-weight: 500;
}
.form-link:hover { text-decoration: underline; }

/* ============ ALERTS ============ */
.alert {
    padding: 12px 14px;
    border-radius: var(--r-md);
    font-size: var(--fs-sm);
    margin-bottom: 20px;
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.alert svg { flex-shrink: 0; margin-top: 2px; }
.alert--error   { background: rgba(248,113,113,.1); border-color: rgba(248,113,113,.4); color: #fecaca; }
.alert--success { background: rgba(74,222,128,.1);  border-color: rgba(74,222,128,.4);  color: #bbf7d0; }
.alert--info    { background: rgba(47,128,255,.1);  border-color: rgba(47,128,255,.4);  color: var(--c-neon-300); }

/* ============ FOOTER LINK ============ */
.auth-foot {
    text-align: center;
    margin-top: 24px;
    font-size: var(--fs-sm);
    color: var(--c-text-soft);
}
.auth-foot a { color: var(--c-neon-400); font-weight: 600; }
.auth-foot a:hover { text-decoration: underline; }

/* ============ RESPONSIVE ============ */
@media (max-width: 500px) {
    .auth-main { padding-top: 84px; }
    .auth-card { padding: 22px 18px; border-radius: var(--r-lg); }
    .auth-card__title { font-size: 1.35rem; }
}