:root{
    --bg-main: #0f172a;
    --bg-soft: #111827;
    --card-bg: rgba(255,255,255,0.96);
    --text-main: #1f2937;
    --text-soft: #6b7280;
    --border: #e5e7eb;
    --accent: #f25e18;
    --accent-2: #ff7c33;
    --accent-soft: #fff3ec;
    --danger-bg: #fff1ef;
    --danger-border: #f3c7c1;
    --danger-text: #c0392b;
    --shadow: 0 20px 50px rgba(0,0,0,0.22);
    --radius-xl: 28px;
    --radius-lg: 18px;
    --radius-md: 14px;
}

*{
    box-sizing: border-box;
}

html, body{
    margin: 0;
    padding: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    min-height: 100%;
}

body.hub-login-body{
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(242,94,24,0.18), transparent 28%),
        radial-gradient(circle at bottom right, rgba(255,124,51,0.14), transparent 30%),
        linear-gradient(135deg, #0b1220 0%, #111827 45%, #0f172a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.hub-login-shell{
    width: 100%;
    max-width: 460px;
}

.hub-login-card{
    width: 100%;
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.45);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    padding: 32px 28px;
    backdrop-filter: blur(8px);
}

.hub-login-brand{
    text-align: center;
    margin-bottom: 20px;
}

.hub-login-logo{
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
}

.brand-prodi{
    color: #111827;
}

.brand-hub{
    color: var(--accent);
}

.hub-login-subtitle{
    margin: 10px 0 0;
    color: var(--text-soft);
    font-size: 0.96rem;
    line-height: 1.5;
}

.hub-login-welcome{
    text-align: center;
    margin-bottom: 22px;
}

.hub-login-welcome h1{
    margin: 0;
    font-size: 1.7rem;
    color: var(--text-main);
    font-weight: 900;
    letter-spacing: -0.03em;
}

.hub-login-welcome p{
    margin: 8px 0 0;
    color: var(--text-soft);
    font-size: 0.95rem;
    line-height: 1.55;
}

.hub-login-alert{
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    color: var(--danger-text);
    font-size: 0.93rem;
    font-weight: 700;
    margin-bottom: 18px;
}

.hub-login-form{
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hub-login-field{
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hub-login-field label{
    font-size: 0.88rem;
    font-weight: 700;
    color: #4b5563;
}

.hub-login-input-wrap{
    position: relative;
    display: flex;
    align-items: center;
}

.hub-login-input-wrap > i{
    position: absolute;
    left: 14px;
    color: #9ca3af;
    font-size: 0.95rem;
    pointer-events: none;
}

.hub-login-input-wrap input{
    width: 100%;
    min-height: 52px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: #fff;
    padding: 0 46px 0 42px;
    font-size: 0.96rem;
    color: var(--text-main);
    outline: none;
    transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.hub-login-input-wrap input:focus{
    border-color: rgba(242,94,24,0.45);
    box-shadow: 0 0 0 4px rgba(242,94,24,0.10);
}

.hub-password-toggle{
    position: absolute;
    right: 8px;
    width: 38px;
    height: 38px;
    border: none;
    background: transparent;
    color: #9ca3af;
    cursor: pointer;
    border-radius: 10px;
    transition: background .18s ease, color .18s ease;
}

.hub-password-toggle:hover{
    background: #f3f4f6;
    color: #4b5563;
}

.hub-login-btn{
    margin-top: 6px;
    min-height: 54px;
    border: none;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
    color: #fff;
    font-size: 0.98rem;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    box-shadow: 0 14px 28px rgba(242,94,24,0.24);
    transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
}

.hub-login-btn:hover{
    transform: translateY(-1px);
    box-shadow: 0 16px 34px rgba(242,94,24,0.28);
    filter: brightness(1.02);
}

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

.hub-login-footer{
    margin-top: 20px;
    text-align: center;
    color: #9ca3af;
    font-size: 0.84rem;
    font-weight: 600;
}

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

    .hub-login-card{
        padding: 26px 20px;
        border-radius: 24px;
    }

    .hub-login-logo{
        font-size: 1.8rem;
    }

    .hub-login-welcome h1{
        font-size: 1.45rem;
    }
}