@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap');
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #1f293a;
}
.container {
    position: relative;
    width: 256px;
    height: 256px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.container span {
    position: absolute;
    left: 0;
    width: 32px;
    height: 6px;
    background: #2c4766;
    border-radius: 8px;
    transform-origin: 128px;
    transform: scale(2.2) rotate(calc(var(--i) * (360deg / 50)));
    animation: animateBlink 3s linear infinite;
    animation-delay: calc(var(--i) * (3s / 50));
}
@keyframes animateBlink {
    0% {
        background: #0ef;
    }
    25% {
        background: #2c4766;
    }
}
.login-box {
    position: absolute;
    width: 400px;
}
.login-box form {
    width: 100%;
    padding: 0 50px;
}
h2 {
    font-size: 2em;
    color: #0ef;
    text-align: center;
}
.input-box {
    position: relative;
    margin: 25px 0;
}
.input-box input {
    width: 100%;
    height: 50px;
    background: transparent;
    border: 2px solid #2c4766;
    outline: none;
    border-radius: 40px;
    font-size: 1em;
    color: #fff;
    padding: 0 20px;
    transition: .5s ease;
}
.input-box input:focus,
.input-box input:valid {
    border-color: #0ef;
}
.input-box label {
    position: absolute;
    top: 50%;
    left: 20px;
    transform: translateY(-50%);
    font-size: 1em;
    color: #fff;
    pointer-events: none;
    transition: .5s ease;
}
.input-box input:focus~label,
.input-box input:valid~label {
    top: 1px;
    font-size: .8em;
    background: #1f293a;
    padding: 0 6px;
    color: #0ef;
}
.forgot-pass {
    margin: -15px 0 10px;
    text-align: center;
}
.forgot-pass a {
    font-size: .85em;
    color: #fff;
    text-decoration: none;
}
.forgot-pass a:hover {
    text-decoration: underline;
}
.btn {
    width: 100%;
    height: 45px;
    background: #0ef;
    border: none;
    outline: none;
    border-radius: 40px;
    cursor: pointer;
    font-size: 1em;
    color: #1f293a;
    font-weight: 600;
}
.signup-link {
    margin: 20px 0 10px;
    text-align: center;
}
.signup-link a {
    font-size: 1em;
    color: #0ef;
    text-decoration: none;
    font-weight: 600;
}
.signup-link a:hover {
    text-decoration: underline;
}


.error-message {
    color: #fff;
    background-color: #ff0000;
    border: 1px solid #ff4d4d;  /* Kenar çizgisi biraz daha ince */
    padding: 5px 10px;          /* Daha az boşluk */
    margin-top: 10px;           /* Daha az üst boşluk */
    border-radius: 5px;         /* Köşeleri daha az yumuşat */
    font-weight: bold;
    font-size: 0.9rem;          /* Daha küçük yazı */
    text-align: center;
    box-shadow: 0 0 5px rgba(255, 0, 0, 0.3); /* Daha küçük gölge */
}