/* ============================================================================
   IM-TEK Exam — kirish sahifasi.

   Uslub: tekis (flat). Shisha, blur, gradient va nur dog'lari yo'q — bitta
   qattiq yuza, aniq 1px ramka, tepada accent chiziq. Sahifa foni asosiy
   layout'dan keladi (tekis rang + katakcha to'r).

   Ranglar light va dark uchun alohida: light qiymatlar `.im-login` ichida,
   dark esa `[data-theme="dark"] .im-login` ostida.
   ========================================================================== */

.im-login {
    --im-lg-surface: #ffffff;
    --im-lg-border:  #e2e8f0;
    --im-lg-text:    #0f172a;
    --im-lg-muted:   #64748b;
    --im-lg-label:   #334155;
    --im-lg-field:   #ffffff;
    --im-lg-line:    #cbd5e1;
    --im-lg-soft:    #f8fafc;
    --im-lg-accent:  #4f46e5;

    color: var(--im-lg-text);
    padding: .5rem 0 2rem;
}

[data-theme="dark"] .im-login {
    --im-lg-surface: #111a2e;
    --im-lg-border:  #263349;
    --im-lg-text:    #e6edf7;
    --im-lg-muted:   #94a3b8;
    --im-lg-label:   #cbd5e1;
    --im-lg-field:   #0d1524;
    --im-lg-line:    #33415c;
    --im-lg-soft:    #172136;
    --im-lg-accent:  #6366f1;
}

/* ── Karta ────────────────────────────────────────────────────────────── */
.im-login-card {
    position: relative;
    width: 100%;
    max-width: 25rem;
    margin: 0 auto;
    background: var(--im-lg-surface);
    border: 1px solid var(--im-lg-border);
    border-radius: .75rem;
    box-shadow: 0 1px 2px rgba(15, 23, 42, .05);
    padding: 1.5rem 1.25rem;
    overflow: hidden;
}

[data-theme="dark"] .im-login-card {
    box-shadow: 0 1px 2px rgba(0, 0, 0, .4);
}

@media (min-width: 640px) {
    .im-login-card { padding: 2rem; }
}

/* Tepadagi accent chiziq — kartaning yagona rangli elementi. */
.im-login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--im-lg-accent);
}

/* ── Sarlavha ─────────────────────────────────────────────────────────── */
.im-login-brand {
    display: flex;
    align-items: center;
    gap: .625rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--im-lg-border);
}

.im-login-brand__logo {
    width: 2.25rem;
    height: 2.25rem;
    object-fit: contain;
    border: 1px solid var(--im-lg-border);
    border-radius: .5rem;
    padding: 2px;
    background: #fff;
}

.im-login-brand__name {
    font-size: .9375rem;
    font-weight: 700;
    letter-spacing: -.01em;
    line-height: 1.2;
}

.im-login-brand__sub {
    display: block;
    font-size: .625rem;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--im-lg-muted);
}

.im-login-title {
    margin-top: 1.25rem;
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -.02em;
}

.im-login-sub {
    margin-top: .25rem;
    font-size: .875rem;
    color: var(--im-lg-muted);
}

/* ── Maydonlar ────────────────────────────────────────────────────────── */
.im-login-label {
    display: block;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--im-lg-label);
    margin-bottom: .375rem;
}

.im-login-field {
    width: 100%;
    padding: .625rem .75rem;
    font-size: .9375rem;
    color: var(--im-lg-text);
    background: var(--im-lg-field);
    border: 1px solid var(--im-lg-line);
    border-radius: .375rem;
    outline: none;
    transition: border-color .15s ease, box-shadow .15s ease;
    -webkit-appearance: none;
            appearance: none;
}

.im-login-field::placeholder { color: #94a3b8; }
[data-theme="dark"] .im-login-field::placeholder { color: #64748b; }

.im-login-field:focus {
    border-color: var(--im-lg-accent);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, .25);
}

.im-login-field--pw { padding-right: 2.5rem; }

.im-login-field.has-error { border-color: #dc2626; }
.im-login-field.has-error:focus { box-shadow: 0 0 0 2px rgba(220, 38, 38, .2); }
[data-theme="dark"] .im-login-field.has-error { border-color: #f87171; }

/* iOS Safari 16px'dan kichik inputda sahifani zumlaydi. */
@media (max-width: 640px) {
    .im-login-field { font-size: 1rem; }
}

.im-login-eye {
    position: absolute;
    right: .25rem;
    top: 50%;
    transform: translateY(-50%);
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: .375rem;
    color: #94a3b8;
    background: none;
    border: 0;
    cursor: pointer;
    transition: color .15s ease;
}
.im-login-eye:hover { color: var(--im-lg-accent); }
[data-theme="dark"] .im-login-eye:hover { color: #a5b4fc; }

.im-login-error {
    display: block;
    margin-top: .3125rem;
    font-size: .8125rem;
    color: #dc2626;
}
[data-theme="dark"] .im-login-error { color: #fca5a5; }

/* ── Arifmetik captcha ────────────────────────────────────────────────── */
.im-login-captcha {
    display: flex;
    align-items: stretch;
    gap: .5rem;
}

.im-login-captcha__q {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    padding: 0 .875rem;
    font-size: .9375rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    letter-spacing: .03em;
    white-space: nowrap;
    color: var(--im-lg-text);
    background: var(--im-lg-soft);
    border: 1px solid var(--im-lg-border);
    border-radius: .375rem;
    user-select: none;
}

.im-login-field--plain { text-align: center; }

/* ── Tugma ────────────────────────────────────────────────────────────── */
.im-login-btn {
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .625rem 1rem;
    font-size: .9375rem;
    font-weight: 600;
    color: #fff;
    background: var(--im-lg-accent);
    border: 0;
    border-radius: .375rem;
    cursor: pointer;
    transition: background .15s ease;
}
.im-login-btn:hover { background: #4338ca; }
[data-theme="dark"] .im-login-btn:hover { background: #4f46e5; }
.im-login-btn:focus-visible { outline: 2px solid var(--im-lg-accent); outline-offset: 2px; }

/* ── Mayda elementlar ─────────────────────────────────────────────────── */
.im-login-check {
    width: 1rem;
    height: 1rem;
    accent-color: var(--im-lg-accent);
    cursor: pointer;
}

.im-login-muted { color: var(--im-lg-muted); }

/* ── Eslatma bloki ────────────────────────────────────────────────────── */
/*
 * Ko'zga tashlanishi kerak, lekin karta uslubidan chiqmasin: rangsiz yuza,
 * chapda accent chiziq.
 */
/*
 * Chekka Tailwind `mt-*` bilan emas, shu yerda: Bootstrap CSS ham `.mt-5`
 * ni belgilaydi (3rem) va Tailwind'niki ustidan qo'llanib ketadi.
 */
.im-login-note {
    margin-top: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: .625rem;
    padding: .75rem .875rem;
    background: var(--im-lg-soft);
    border: 1px solid var(--im-lg-border);
    border-left: 3px solid var(--im-lg-accent);
    border-radius: .375rem;
}

.im-login-note__icon {
    flex-shrink: 0;
    margin-top: .0625rem;
    color: var(--im-lg-accent);
}
[data-theme="dark"] .im-login-note__icon { color: #a5b4fc; }

.im-login-note__title {
    display: block;
    font-size: .8125rem;
    font-weight: 600;
    line-height: 1.45;
    color: var(--im-lg-text);
}

.im-login-note__text {
    display: block;
    margin-top: .125rem;
    font-size: .8125rem;
    line-height: 1.45;
    color: var(--im-lg-muted);
}