:root {
    --sidebar-bg: #2d2b6b;
    --accent: #5b5ea6;
    --accent-light: #7c7fd4;
    --body-bg: #f0f1fa;
    --shadow-md: 0 8px 32px rgba(45, 43, 107, 0.16);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background: var(--body-bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Dekoratif latar belakang */
body::before {
    content: '';
    position: fixed;
    top: -120px;
    left: -120px;
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(91, 94, 166, 0.18) 0%, transparent 70%);
    border-radius: 50%;
}

body::after {
    content: '';
    position: fixed;
    bottom: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(45, 43, 107, 0.12) 0%, transparent 70%);
    border-radius: 50%;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    padding: 40px 36px;
    position: relative;
    z-index: 1;
}

.login-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
}

.login-brand-icon {
    width: 48px;
    height: 48px;
    background: var(--sidebar-bg);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
}

.login-brand-text strong {
    display: block;
    font-size: 16px;
    font-weight: 800;
    color: var(--sidebar-bg);
    line-height: 1.2;
}

.login-brand-text small {
    font-size: 12px;
    color: #8b8fa8;
}

.login-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--sidebar-bg);
    margin-bottom: 4px;
}

.login-sub {
    font-size: 13px;
    color: #8b8fa8;
    margin-bottom: 28px;
}

.form-label {
    font-weight: 600;
    font-size: 12.5px;
    color: #4b4f7c;
    margin-bottom: 6px;
}

.form-control {
    border: 1.5px solid #e0e1f0;
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 14px;
    transition: all .2s;
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(91, 94, 166, 0.12);
}

.input-group-text {
    background: #f4f5fb;
    border: 1.5px solid #e0e1f0;
    border-right: none;
    border-radius: 10px 0 0 10px;
    color: #8b8fa8;
}

.input-group .form-control {
    border-left: none;
    border-radius: 0 10px 10px 0;
}

.input-group .form-control:focus {
    border-color: var(--accent);
}

.btn-login {
    background: var(--sidebar-bg);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 12px;
    font-size: 14px;
    font-weight: 700;
    width: 100%;
    transition: all .2s;
    letter-spacing: .02em;
}

.btn-login:hover {
    background: var(--accent);
    transform: translateY(-1px);
}

.btn-login:active {
    transform: translateY(0);
}

.alert {
    border: none;
    border-radius: 10px;
    font-size: 13.5px;
}

/* Dekorasi pojok */
.deco-dot {
    position: absolute;
    border-radius: 50%;
    opacity: .08;
}

.deco-dot-1 {
    width: 80px;
    height: 80px;
    background: var(--sidebar-bg);
    top: -24px;
    right: -24px;
}

.deco-dot-2 {
    width: 48px;
    height: 48px;
    background: var(--accent);
    bottom: 32px;
    left: -16px;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 12px;
    color: #aab0c0;
}