* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Poppins', 'Segoe UI', Tahoma, sans-serif;
}

body {
    background: linear-gradient(135deg, #000000, #1a1a1a, #000000);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    overflow: hidden;
}

/* Efek bokeh halus background */
body::before {
    content: "";
    position: absolute;
    width: 400%;
    height: 400%;
    background: radial-gradient(circle at center, rgba(255,255,255,0.05), transparent 60%);
    transform: rotate(25deg);
    z-index: 0;
}

.container {
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(20px);
    padding: 50px 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
    width: 100%;
    max-width: 420px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 215, 0, 0.3);
    position: relative;
    z-index: 1;
}

h2 {
    text-align: center;
    margin-bottom: 35px;
    color: #FFD700;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-shadow: 0 0 8px rgba(255, 215, 0, 0.5);
}

form .input-group {
    margin-bottom: 25px;
    position: relative;
}

.input-group input {
    width: 100%;
    padding: 16px 20px;
    border: none;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 16px;
    backdrop-filter: blur(10px);
    transition: 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.7);
    font-style: italic;
}

.input-group input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.6);
}

button {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #FFD700, #DAA520);
    color: #000000;
    border: none;
    border-radius: 14px;
    font-size: 16px;
    cursor: pointer;
    font-weight: 700;
    letter-spacing: 0.7px;
    transition: all 0.5s ease;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

button::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(255,255,255,0.4), rgba(255,255,255,0));
    transition: all 0.5s ease;
}

button:hover::before {
    left: 100%;
}

button:hover {
    background: linear-gradient(135deg, #DAA520, #FFD700);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.7);
}

.links {
    margin-top: 25px;
    text-align: center;
    z-index: 1;
}

.links a {
    color: #FFD700;
    text-decoration: none;
    margin: 0 10px;
    font-weight: 600;
    transition: 0.3s;
}

.links a:hover {
    text-decoration: underline;
    color: #fff;
}

.footer {
    text-align: center;
    color: #FFD700;
    font-size: 14px;
    margin-top: 20px;
    z-index: 1;
}

.btn-beranda {
    display: block;
    margin-top: 20px;
    padding: 14px;
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid #FFD700;
    border-radius: 14px;
    color: #FFD700;
    font-weight: 600;
    text-decoration: none;
    transition: 0.4s;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.btn-beranda:hover {
    background: rgba(255, 215, 0, 0.2);
    color: #ffffff;
    transform: translateY(-2px);
}

.captcha-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.captcha-box {
    background: linear-gradient(135deg, #FFD700, #FFB700);
    color: #333;
    font-weight: bold;
    letter-spacing: 5px;
    font-size: 1.1rem;
    text-align: center;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    user-select: none;
    font-family: 'Courier New', monospace;
    width: 100%;
}

.captcha-group input {
    width: 100%;
    padding: 14px 16px;
    border: none;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 16px;
    backdrop-filter: blur(5px);
}

.captcha-group input::placeholder {
    color: rgba(255, 255, 255, 0.6);
    font-style: italic;
}