:root {
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    --input-bg: rgba(0, 0, 0, 0.2);
}
body {
    margin: 0;
    padding: 0;
    font-family: 'Vazirmatn', system-ui, -apple-system, sans-serif;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: radial-gradient(circle at center, #1a1a2e 0%, #16213e 100%);
}
.circles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
    margin: 0;
    padding: 0;
}
.circles li {
    position: absolute;
    display: block;
    list-style: none;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.05);
    animation: animate 25s linear infinite;
    bottom: -150px;
    border-radius: 50%;
}
.circles li:nth-child(1){ left: 25%; width: 80px; height: 80px; animation-delay: 0s; }
.circles li:nth-child(2){ left: 10%; width: 20px; height: 20px; animation-delay: 2s; animation-duration: 12s; }
.circles li:nth-child(3){ left: 70%; width: 20px; height: 20px; animation-delay: 4s; }
.circles li:nth-child(4){ left: 40%; width: 60px; height: 60px; animation-delay: 0s; animation-duration: 18s; }
.circles li:nth-child(5){ left: 65%; width: 20px; height: 20px; animation-delay: 0s; }
@keyframes animate {
    0%{ transform: translateY(0) rotate(0deg); opacity: 1; border-radius: 0; }
    100%{ transform: translateY(-1000px) rotate(720deg); opacity: 0; border-radius: 50%; }
}
.glass-card {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.05) !important;
    box-shadow: var(--glass-shadow);
    -webkit-backdrop-filter: blur(16px) !important;
    backdrop-filter: blur(16px) !important;

    border-radius: 20px;
    border: 1px solid var(--glass-border);
    padding: 3rem;
    width: 100%;
    max-width: 400px;
    color: white;
}
.form-control {
    background-color: rgba(0, 0, 0, 0.3) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    color: #fff !important;
    padding: 12px 15px;
    border-radius: 10px;
    font-size: 0.95rem;
}
.form-control:focus {
    background-color: rgba(0, 0, 0, 0.5) !important;
    border-color: #e73c7e !important;
    box-shadow: none !important;
    color: #fff !important;
}
.form-control::placeholder {
    color: rgba(255, 255, 255, 0.4) !important;
}
.input-group-text {
    background-color: rgba(0, 0, 0, 0.3) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-left: none !important;
    color: rgba(255, 255, 255, 0.7) !important;
    border-radius: 0 10px 10px 0 !important;
}
.input-group .form-control {
    border-radius: 10px 0 0 10px !important;
}
.btn-login {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    color: white;
    margin-top: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    transition: transform 0.2s;
}
.btn-login:hover {
    transform: translateY(-2px);
    color: white;
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}
.logo-area {
    text-align: center;
    margin-bottom: 30px;
}
.logo-area i {
    font-size: 45px;
    background: -webkit-linear-gradient(#e73c7e, #23a6d5);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}
.form-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    margin-bottom: 5px;
}
.copyright {
    position: fixed;
    bottom: 15px;
    color: rgba(255, 255, 255, 0.2);
    font-size: 12px;
}