* {
    box-sizing: border-box;
}

:root {
    --bg: #060910;
    --panel: rgba(10, 16, 27, 0.94);
    --border: rgba(92, 225, 255, 0.24);
    --cyan: #5ce1ff;
    --purple: #9b6cff;
    --pink: #ff4fd8;
    --green: #48f0a4;
    --text: #edf6ff;
    --muted: #7d91aa;
    --danger: #ff5a7a;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at 15% 15%, rgba(92, 225, 255, 0.12), transparent 28%),
        radial-gradient(circle at 85% 20%, rgba(255, 79, 216, 0.12), transparent 30%),
        linear-gradient(180deg, #05080e 0%, #090d16 100%);
    color: var(--text);
}

body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    overflow: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
    background-size: 42px 42px;
}

.login-shell {
    width: min(1100px, calc(100% - 40px));
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    border: 1px solid rgba(92, 225, 255, 0.2);
    background: rgba(5, 9, 16, 0.8);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
}

.login-left {
    position: relative;
    padding: 48px;
    min-height: 620px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-right: 1px solid rgba(92, 225, 255, 0.12);
    background:
        linear-gradient(135deg, rgba(92, 225, 255, 0.05), transparent 50%),
        linear-gradient(315deg, rgba(255, 79, 216, 0.05), transparent 45%);
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-logo {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border: 1px solid rgba(92, 225, 255, 0.5);
    color: var(--cyan);
    font-size: 24px;
    font-weight: 900;
    background: rgba(92, 225, 255, 0.05);
    box-shadow: 0 0 30px rgba(92, 225, 255, 0.12);
}

.brand-block h1 {
    margin: 0;
    font-size: 22px;
    letter-spacing: 0.06em;
}

.brand-block span {
    display: block;
    margin-top: 5px;
    color: var(--muted);
    font-size: 10px;
    letter-spacing: 0.18em;
}

.system-copy {
    max-width: 560px;
}

.eyebrow {
    color: var(--cyan);
    font-size: 11px;
    letter-spacing: 0.18em;
}

.system-copy h2 {
    margin: 12px 0 14px;
    font-size: 46px;
    line-height: 1.05;
}

.system-copy p {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
    max-width: 500px;
}

.system-status {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.system-status div {
    padding: 14px;
    border: 1px solid rgba(121, 144, 180, 0.14);
    background: rgba(255,255,255,0.015);
}

.system-status span {
    display: block;
    color: var(--muted);
    font-size: 10px;
    margin-bottom: 6px;
    letter-spacing: 0.12em;
}

.system-status strong {
    color: var(--green);
    font-size: 12px;
}

.login-panel {
    padding: 44px 36px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background:
        linear-gradient(180deg, rgba(13, 20, 32, 0.95), rgba(7, 12, 21, 0.98));
}

.panel-header {
    margin-bottom: 34px;
}

.panel-header span {
    display: block;
    color: var(--pink);
    font-size: 10px;
    letter-spacing: 0.18em;
    margin-bottom: 8px;
}

.panel-header strong {
    font-size: 24px;
    letter-spacing: 0.06em;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.login-form label span {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 11px;
    letter-spacing: 0.08em;
}

.login-form input {
    width: 100%;
    padding: 14px 15px;
    border: 1px solid rgba(92, 225, 255, 0.22);
    outline: none;
    background: rgba(4, 8, 15, 0.8);
    color: var(--text);
    font-size: 14px;
    transition: 0.18s ease;
}

.login-form input:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 1px rgba(92, 225, 255, 0.12);
}

.login-form button {
    margin-top: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border: 1px solid rgba(255, 79, 216, 0.45);
    background:
        linear-gradient(90deg, rgba(155, 108, 255, 0.18), rgba(255, 79, 216, 0.12));
    color: var(--text);
    font-weight: 700;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: 0.2s ease;
}

.login-form button:hover {
    transform: translateY(-1px);
    border-color: var(--pink);
    box-shadow:
        0 0 25px rgba(255, 79, 216, 0.12),
        0 0 16px rgba(92, 225, 255, 0.08);
}

.login-error {
    display: none;
    color: var(--danger);
    font-size: 12px;
}

.login-error.visible {
    display: block;
}

.panel-footer {
    margin-top: 34px;
    padding-top: 16px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    border-top: 1px solid rgba(92, 225, 255, 0.1);
    color: #526277;
    font-size: 9px;
    letter-spacing: 0.12em;
}

@media (max-width: 850px) {
    .login-shell {
        grid-template-columns: 1fr;
    }

    .login-left {
        min-height: auto;
        gap: 40px;
    }

    .system-copy h2 {
        font-size: 36px;
    }

    .system-status {
        grid-template-columns: 1fr;
    }
}