:root {
    --bg: #081017;
    --panel: rgba(13, 22, 34, 0.88);
    --panel-border: rgba(129, 168, 255, 0.22);
    --text: #e8eef8;
    --muted: #94a0b3;
    --accent: #6ea4ff;
    --accent-strong: #4f7cf7;
    --danger: #ff6c7a;
    --radius-xl: 20px;
    --radius-md: 12px;
    --shadow: 0 30px 70px rgba(3, 7, 15, 0.55);
    --font-main: 'Manrope', 'Segoe UI', Tahoma, sans-serif;
}

* {
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-main);
    color: var(--text);
    background:
        radial-gradient(1200px 700px at -10% -20%, rgba(91, 145, 255, 0.24), transparent 60%),
        radial-gradient(900px 600px at 120% 120%, rgba(78, 111, 255, 0.18), transparent 58%),
        var(--bg);
}

.login-bg-shape {
    position: fixed;
    width: 40vw;
    height: 40vw;
    max-width: 520px;
    max-height: 520px;
    border-radius: 50%;
    pointer-events: none;
    filter: blur(18px);
}

.login-bg-shape-left {
    left: -10vw;
    top: -15vw;
    background: rgba(115, 168, 255, 0.22);
}

.login-bg-shape-right {
    right: -12vw;
    bottom: -14vw;
    background: rgba(81, 116, 255, 0.2);
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-card {
    width: min(460px, 100%);
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
    padding: 28px;
}

.login-header {
    margin-bottom: 20px;
}

.login-badge {
    margin: 0 0 10px;
    font-size: 12px;
    letter-spacing: 0.16em;
    font-weight: 800;
    color: #9ab7ff;
}

.login-header h1 {
    margin: 0 0 8px;
    font-size: clamp(1.35rem, 2.2vw, 1.85rem);
    line-height: 1.2;
}

.login-header p {
    margin: 0;
    color: var(--muted);
    font-size: 0.96rem;
}

.login-header code {
    color: #c5d9ff;
    background: rgba(111, 158, 255, 0.16);
    border: 1px solid rgba(111, 158, 255, 0.35);
    border-radius: 8px;
    padding: 1px 6px;
}

.login-form {
    display: grid;
    gap: 14px;
}

.login-field {
    display: grid;
    gap: 7px;
}

.login-field span {
    font-size: 0.9rem;
    color: #c9d3e8;
}

.login-field input {
    width: 100%;
    border: 1px solid rgba(151, 172, 211, 0.32);
    border-radius: var(--radius-md);
    padding: 12px 13px;
    font-size: 0.97rem;
    background: rgba(5, 11, 20, 0.45);
    color: var(--text);
    transition: border-color 180ms ease, box-shadow 180ms ease;
}

.login-field input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(110, 164, 255, 0.2);
}

.login-submit {
    margin-top: 4px;
    border: none;
    border-radius: var(--radius-md);
    padding: 12px 14px;
    font-size: 0.97rem;
    font-weight: 800;
    color: white;
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    transition: transform 180ms ease, filter 180ms ease, opacity 180ms ease;
}

.login-submit:hover {
    transform: translateY(-1px);
    filter: brightness(1.06);
}

.login-submit:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none;
}

.login-feedback {
    min-height: 22px;
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

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

.login-feedback.success {
    color: #5fd79a;
}

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

    .login-card {
        border-radius: 16px;
        padding: 22px 18px;
    }
}