* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: linear-gradient(135deg, #0f172a, #1e293b, #312e81, #0f766e);
    background-size: 300% 300%;
    animation: gradientShift 12s ease infinite;
    color: #fff;
    padding: 24px;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.card {
    width: 100%;
    max-width: 760px;
    padding: 32px;
    border-radius: 28px;

    /* Arka plan rengi ve şeffaflığı */
    background: rgba(255, 255, 255, 0.10);

    /* Cam efekti (Blur) - Sıralama önemlidir */
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);

    /* Kenarlık ve Gölge */
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);

    /* Donanım hızlandırma (Mobil ve Safari dostu) */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);

    /* Katman önceliği */
    position: relative;
    z-index: 1;
}


form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

p {
    color: rgba(255, 255, 255, .78);
    margin-bottom: 24px;
    line-height: 1.7;
}

a {
    color: #fff;
}

input,
textarea,
button,
.btn {
    width: 100%;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .08);
    color: #fff;
    font: inherit;
}

input::placeholder,
textarea::placeholder {
    color: rgba(255, 255, 255, .6);
}

textarea {
    min-height: 160px;
    resize: vertical;
}

button,
.btn {
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.row {
    display: flex;
    gap: 12px;
    flex-wrap: nowrap;
}

@media (max-width: 720px) {
    .card {
        padding: 24px;
    }

    .row {
        flex-direction: row;
    }
}