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

body {
    background-color: #000; /* Video yüklenene kadar siyah kalsın */
    height: 100vh;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    overflow: hidden;
}

/* Arkaplan Videosu */
.bg-video {
    position: fixed;
    right: 0;
    bottom: 0;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -2;
    object-fit: cover;
    filter: brightness(0.6) contrast(1.2); /* Videoyu biraz karartıp renklerini belirginleştiriyoruz */
}

/* Video Üzeri Karanlık Degrade */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, #0d0d0d 100%);
    z-index: -1;
}

/* Giriş Kartı Animasyonu */
.login-card {
    background: rgba(15, 15, 15, 0.6); /* Daha şeffaf yaptık ki video arkadan hissedilsin */
    backdrop-filter: blur(15px); /* Cam efekti (Glassmorphism) artırıldı */
    border: 1px solid rgba(212, 175, 55, 0.2); 
    padding: 3rem 4rem;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.8);
    text-align: center;
    animation: fadeInUp 1s ease-out forwards;
    opacity: 0;
    transform: translateY(30px);
    margin-left: 5%;
}

.motto {
    color: #d4af37; 
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 2.5rem;
    text-transform: uppercase;
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.3); /* Yazıya hafif altın parlaklığı eklendi */
}

/* ... Kalan CSS kodları (input-group, login-btn vs.) aynen kalabilir ... */

/* Form Elemanları (Kayan Label Animasyonu) */
.input-group {
    position: relative;
    margin-bottom: 2rem;
    text-align: left;
}

.input-group input {
    width: 100%;
    padding: 10px 0;
    font-size: 1rem;
    color: #fff;
    background: transparent;
    border: none;
    border-bottom: 2px solid #555;
    outline: none;
    transition: 0.3s;
}

.input-group label {
    position: absolute;
    top: 10px;
    left: 0;
    font-size: 1rem;
    color: #888;
    pointer-events: none;
    transition: 0.3s ease all;
}

.input-group input:focus,
.input-group input:valid {
    border-bottom-color: #d4af37;
}

.input-group input:focus ~ label,
.input-group input:valid ~ label {
    top: -20px;
    font-size: 0.8rem;
    color: #d4af37;
}

/* Giriş Butonu */
.login-btn {
    width: 100%;
    padding: 12px;
    background: transparent;
    color: #d4af37;
    border: 1px solid #d4af37;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: 0.3s;
}

.login-btn:hover {
    background: #d4af37;
    color: #0d0d0d;
    box-shadow: 0 0 15px rgba(212, 175, 55, 0.4);
}

/* Hata Mesajı */
.error-message {
    color: #e74c3c;
    margin-top: 15px;
    font-size: 0.9rem;
    min-height: 20px;
}

/* Keyframes */
@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); text-shadow: 0 0 10px rgba(212, 175, 55, 0.5); }
    100% { transform: scale(1); }
}