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

body {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    min-height: 100vh;
    color: #e2e8f0;
}

.bg-cubes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.cube {
    position: absolute;
    opacity: 0.15;
    background: linear-gradient(135deg, #f72585, #b5179e);
    animation: float 20s infinite linear;
}

.cube:nth-child(1) {
    width: 100px;
    height: 100px;
    top: 15%;
    left: 15%;
    animation-delay: 0s;
}

.cube:nth-child(2) {
    width: 150px;
    height: 150px;
    top: 65%;
    left: 75%;
    animation-delay: -5s;
}

.cube:nth-child(3) {
    width: 200px;
    height: 200px;
    top: 25%;
    left: 55%;
    animation-delay: -10s;
}

.cube:nth-child(4) {
    width: 120px;
    height: 120px;
    top: 75%;
    left: 25%;
    animation-delay: -15s;
}

@keyframes float {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.form-container {
    max-width: 400px;
    margin: 8% auto;
    background: rgba(30, 41, 59, 0.85);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    text-align: center;
}

h2 {
    background: linear-gradient(135deg, #f72585, #b5179e);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
    color: #94a3b8;
}

input {
    width: 100%;
    padding: 0.8rem 1rem;
    border-radius: 10px;
    border: none;
    background: rgba(15, 23, 42, 0.7);
    color: #e2e8f0;
}

input:focus {
    outline: 2px solid #f72585;
}

.btn {
    width: 100%;
    padding: 0.9rem;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #f72585, #b5179e);
    color: #ffffff;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

.extra {
    margin-top: 1.5rem;
    color: #94a3b8;
}

.extra a {
    color: #f72585;
    text-decoration: none;
}

.extra a:hover {
    text-decoration: underline;
}

.flash {
    margin-bottom: 1rem;
    padding: 0.8rem;
    border-radius: 8px;
    font-size: 0.9rem;
}

.flash.success {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.flash.danger {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

@media (max-width: 600px) {
    .form-container {
        max-width: 92%;
        margin: 2.5rem auto;
        padding: 2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .form-group {
        margin-bottom: 1.2rem;
    }

    input {
        font-size: 1rem;
        padding: 0.75rem 0.9rem;
    }

    .extra {
        font-size: 0.95rem;
    }
}