:root {
    --lkul-bg: #eef2f7;
    --lkul-bg-accent: #e4ecf8;
    --lkul-card: #ffffff;
    --lkul-text: #1f2a37;
    --lkul-muted: #6b7a90;
    --lkul-border: #d7e0ec;
    --lkul-primary: #0168fa;
    --lkul-primary-hover: #0054d1;
    --lkul-primary-soft: rgba(1, 104, 250, 0.12);
    --lkul-danger: #e11d48;
    --lkul-danger-soft: #fff1f2;
    --lkul-shadow: 0 24px 60px rgba(15, 40, 80, 0.14);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body.lkul-login-body {
    min-height: 100vh;
    color: var(--lkul-text);
    font-family: 'Roboto', Arial, sans-serif;
    background:
        radial-gradient(1200px 600px at 8% -8%, rgba(1, 104, 250, 0.18), transparent 55%),
        radial-gradient(900px 500px at 100% 0%, rgba(53, 71, 147, 0.14), transparent 50%),
        linear-gradient(180deg, var(--lkul-bg) 0%, var(--lkul-bg-accent) 100%);
}

.lkul-login {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 40px 20px;
}

.lkul-login__shell {
    width: min(1100px, 100%);
    min-height: 620px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
    background: var(--lkul-card);
    border: 1px solid rgba(215, 224, 236, 0.95);
    border-radius: 22px;
    box-shadow: var(--lkul-shadow);
    animation: lkulLoginIn 420ms ease-out;
}

@keyframes lkulLoginIn {
    from {
        opacity: 0;
        transform: translateY(14px) scale(0.995);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.lkul-login__brand {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    padding: 56px 52px;
    color: #ffffff;
    background: linear-gradient(155deg, #0168fa 0%, #0b55d4 42%, #354793 100%);
}

.lkul-login__brand::before,
.lkul-login__brand::after {
    position: absolute;
    content: '';
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    pointer-events: none;
}

.lkul-login__brand::before {
    width: 280px;
    height: 280px;
    top: -90px;
    left: -70px;
}

.lkul-login__brand::after {
    width: 260px;
    height: 260px;
    right: -80px;
    bottom: -90px;
}

.lkul-login__brand-top,
.lkul-login__brand-foot {
    position: relative;
    z-index: 1;
}

.lkul-login__brand-top {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 34px;
}

.lkul-login__logo-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 20px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.lkul-login__logo {
    display: block;
    width: 240px;
    max-width: 100%;
    height: auto;
}

.lkul-login__eyebrow {
    margin: 0 0 10px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.lkul-login__brand h1 {
    margin: 0;
    font-size: 40px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.lkul-login__brand-line {
    width: 56px;
    height: 4px;
    margin-top: 22px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.85);
}

.lkul-login__brand-foot {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 20px;
    color: rgba(255, 255, 255, 0.86);
    font-size: 15px;
    line-height: 1.5;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.lkul-login__brand-foot-icon {
    width: 40px;
    height: 40px;
    display: grid;
    flex-shrink: 0;
    place-items: center;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.14);
}

.lkul-login__brand-foot-icon svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: #ffffff;
    stroke-width: 1.8;
}

.lkul-login__brand-foot a {
    color: #ffffff;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.lkul-login__brand-foot a:hover {
    opacity: 0.9;
}

.lkul-login__panel {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 56px;
}

.lkul-login__panel-inner {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.lkul-login__panel-head {
    margin-bottom: 32px;
}

.lkul-login__panel-head p {
    margin: 0 0 8px;
    color: var(--lkul-muted);
    font-size: 15px;
    font-weight: 500;
}

.lkul-login__panel-head h2 {
    margin: 0;
    font-size: 34px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.lkul-login__panel-head-line {
    width: 48px;
    height: 4px;
    margin-top: 14px;
    border-radius: 999px;
    background: var(--lkul-primary);
}

.lkul-login__form {
    display: grid;
    gap: 18px;
}

.lkul-login__field {
    display: grid;
    gap: 8px;
}

.lkul-login__field label {
    color: #31445f;
    font-size: 15px;
    font-weight: 500;
}

.lkul-login__field input {
    width: 100%;
    padding: 16px 18px;
    color: var(--lkul-text);
    font: inherit;
    font-size: 17px;
    line-height: 1.3;
    outline: none;
    background: #f7f9fc;
    border: 1px solid var(--lkul-border);
    border-radius: 14px;
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

.lkul-login__field input::placeholder {
    color: #97a6bb;
}

.lkul-login__field input:focus {
    background: #ffffff;
    border-color: var(--lkul-primary);
    box-shadow: 0 0 0 4px var(--lkul-primary-soft);
}

.lkul-login__submit {
    margin-top: 8px;
    padding: 16px 20px;
    color: #ffffff;
    font: inherit;
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    background: var(--lkul-primary);
    border: 0;
    border-radius: 14px;
    box-shadow: 0 12px 28px rgba(1, 104, 250, 0.3);
    transition: background .2s ease, transform .15s ease, box-shadow .2s ease;
}

.lkul-login__submit:hover {
    background: var(--lkul-primary-hover);
    transform: translateY(-1px);
}

.lkul-login__submit:active {
    transform: none;
}

.lkul-login__submit:focus-visible {
    outline: 3px solid rgba(1, 104, 250, 0.28);
    outline-offset: 3px;
}

.lkul-login__error {
    padding: 14px 16px;
    color: var(--lkul-danger);
    font-size: 15px;
    line-height: 1.4;
    background: var(--lkul-danger-soft);
    border: 1px solid rgba(225, 29, 72, 0.2);
    border-radius: 14px;
    animation: lkulShake .35s ease;
}

@keyframes lkulShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

.lkul-login__copyright {
    margin: 32px 0 0;
    color: var(--lkul-muted);
    font-size: 14px;
    text-align: center;
}

.lkul-login__mobile-logo {
    display: none;
    width: 200px;
    max-width: 100%;
    margin: 0 auto 26px;
}

@media (max-width: 920px) {
    .lkul-login__shell {
        width: min(560px, 100%);
        min-height: 0;
        grid-template-columns: 1fr;
    }

    .lkul-login__brand {
        min-height: auto;
        padding: 32px 28px;
    }

    .lkul-login__brand-top {
        flex: 0;
        gap: 22px;
    }

    .lkul-login__brand h1 {
        font-size: 30px;
    }

    .lkul-login__logo {
        width: 180px;
    }

    .lkul-login__panel {
        padding: 36px 28px 40px;
    }

    .lkul-login__panel-head h2 {
        font-size: 28px;
    }
}

@media (max-width: 560px) {
    .lkul-login {
        padding: 16px;
    }

    .lkul-login__brand {
        display: none;
    }

    .lkul-login__mobile-logo {
        display: block;
    }

    .lkul-login__shell {
        border-radius: 18px;
    }

    .lkul-login__panel {
        padding: 28px 22px 32px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .lkul-login__shell,
    .lkul-login__error {
        animation: none;
    }

    .lkul-login__submit,
    .lkul-login__field input {
        transition: none;
    }
}