:root {
    color-scheme: dark;
    --navy: #17153a;
    --navy-deep: #080b18;
    --blue: #0066ff;
    --lime: #a8d26a;
    --soft: #f7f8fa;
    --line: rgba(247, 248, 250, 0.18);
    --text: #f7f8fa;
    --muted: #c6c9d6;
    --danger: #ff6b61;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100dvh;
    display: grid;
    place-items: center;
    padding: clamp(18px, 4vw, 52px);
    background:
        linear-gradient(115deg, rgba(8, 11, 24, 0.96), rgba(23, 21, 58, 0.88) 52%, rgba(8, 11, 24, 0.92)),
        url("/assets/katriun-login-bg.jpg") center right / cover no-repeat,
        var(--navy-deep);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
    font: inherit;
}

.login-shell {
    width: min(1040px, 100%);
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 420px);
    align-items: stretch;
    overflow: hidden;
    border: 1px solid rgba(247, 248, 250, 0.16);
    border-radius: 8px;
    background:
        linear-gradient(135deg, rgba(23, 21, 58, 0.78), rgba(8, 11, 24, 0.92)),
        rgba(8, 11, 24, 0.86);
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
    backdrop-filter: blur(14px);
}

.login-brand {
    position: relative;
    min-height: 380px;
    display: grid;
    grid-template-columns: 78px minmax(0, 1fr);
    align-content: center;
    align-items: center;
    gap: 20px;
    padding: clamp(28px, 5vw, 56px);
    isolation: isolate;
}

.login-brand::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        linear-gradient(90deg, rgba(8, 11, 24, 0.26), rgba(8, 11, 24, 0.78)),
        url("/assets/katriun-login-bg.jpg") center / cover no-repeat;
    opacity: 0.46;
}

.login-brand::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    z-index: -1;
    height: 4px;
    background: linear-gradient(90deg, var(--lime), var(--blue));
}

.brand-mark {
    position: relative;
    width: 78px;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    border: 2px solid var(--lime);
    border-radius: 50%;
    color: var(--soft);
    background: rgba(23, 21, 58, 0.56);
    box-shadow: 0 0 36px rgba(168, 210, 106, 0.28);
    font-size: 40px;
    font-weight: 820;
    line-height: 1;
}

.brand-mark::after {
    content: "";
    position: absolute;
    top: -5px;
    left: 50%;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--lime);
    transform: translateX(-50%);
    box-shadow:
        0 78px 0 var(--lime),
        39px 39px 0 var(--lime),
        -39px 39px 0 var(--lime);
}

h1,
h2,
p {
    margin: 0;
}

h1 {
    font-size: clamp(34px, 4vw, 50px);
    line-height: 0.96;
    letter-spacing: 0;
}

.login-brand p {
    max-width: 410px;
    margin-top: 12px;
    color: var(--muted);
    font-size: 17px;
    line-height: 1.45;
}

.login-panel {
    width: 100%;
    display: grid;
    gap: 18px;
    align-content: center;
    justify-self: stretch;
    background: rgba(8, 11, 24, 0.72);
    border-left: 1px solid rgba(247, 248, 250, 0.16);
    padding: clamp(26px, 4vw, 42px);
}

.panel-title {
    display: grid;
    gap: 12px;
}

.accent-line {
    display: block;
    width: 52px;
    height: 3px;
    border-radius: 999px;
    background: var(--lime);
}

h2 {
    font-size: 24px;
    line-height: 1.15;
}

.panel-title p {
    margin-top: 5px;
    color: var(--muted);
}

.message {
    min-height: 20px;
    font-size: 14px;
    color: var(--muted);
}

.message.error {
    color: var(--danger);
}

.message.success {
    color: var(--lime);
}

.login-form {
    display: grid;
    gap: 13px;
}

label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

input {
    width: 100%;
    border: 1px solid rgba(247, 248, 250, 0.16);
    border-radius: 8px;
    min-height: 48px;
    padding: 11px 12px;
    background: rgba(247, 248, 250, 0.08);
    color: var(--text);
    outline: none;
}

input:focus {
    border-color: var(--lime);
    box-shadow: 0 0 0 3px rgba(168, 210, 106, 0.18);
}

button {
    border: 0;
    border-radius: 8px;
    min-height: 50px;
    background: var(--lime);
    color: #111329;
    font-weight: 820;
    cursor: pointer;
}

button:hover {
    filter: brightness(1.04);
}

@media (max-width: 820px) {
    body {
        min-height: 100dvh;
        display: block;
        padding: 0;
        background:
            linear-gradient(180deg, rgba(8, 11, 24, 0.98), rgba(23, 21, 58, 0.9) 54%, rgba(8, 11, 24, 0.96)),
            url("/assets/katriun-login-bg.jpg") center top / cover no-repeat,
            var(--navy-deep);
    }

    .login-shell {
        grid-template-columns: 1fr;
        min-height: 100dvh;
        width: 100%;
        border: 0;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
    }

    .login-brand,
    .login-panel {
        justify-self: stretch;
    }

    .login-brand {
        min-height: 300px;
        grid-template-columns: 54px minmax(0, 1fr);
        align-content: end;
        padding: 34px 20px 24px;
    }

    .brand-mark {
        width: 54px;
        font-size: 29px;
    }

    .brand-mark::after {
        top: -4px;
        width: 7px;
        height: 7px;
        box-shadow:
            0 54px 0 var(--lime),
            27px 27px 0 var(--lime),
            -27px 27px 0 var(--lime);
    }

    h1 {
        font-size: 34px;
    }

    .login-brand p {
        font-size: 16px;
    }

    .login-panel {
        min-height: calc(100dvh - 300px);
        border-left: 0;
        border-top: 1px solid rgba(247, 248, 250, 0.16);
        background: rgba(8, 11, 24, 0.82);
        padding: 28px 20px 32px;
    }
}