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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 420px;
}

.login-box {
    background: #ffffff;
    border-radius: 20px;
    padding: 40px 35px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    animation: slideUp 0.5s ease;
    border: 1px solid #e8e8e8;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.08));
}

.logo svg circle {
    fill: #e0e0e0;
}

.logo svg path {
    stroke: #ffffff;
}

h1 {
    color: #2d3748;
    font-size: 28px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 8px;
}

.subtitle {
    color: #718096;
    font-size: 14px;
    text-align: center;
    margin-bottom: 30px;
}

.login-form {
    display: flex;
    flex-direction: column;
}

.input-group {
    margin-bottom: 20px;
}

label {
    display: block;
    color: #4a5568;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 15px;
    color: #2d3748;
    background: #f7fafc;
    transition: all 0.3s ease;
    outline: none;
}

input::placeholder {
    color: #a0aec0;
}

input:focus {
    border-color: #cbd5e0;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(203, 213, 224, 0.2);
}

.forgot-password {
    color: #718096;
    font-size: 13px;
    text-decoration: none;
    text-align: right;
    margin-bottom: 25px;
    display: block;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #4a5568;
    text-decoration: underline;
}

.login-btn {
    background: linear-gradient(135deg, #e0e0e0 0%, #c0c0c0 100%);
    color: #2d3748;
    border: none;
    padding: 15px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.login-btn:hover {
    background: linear-gradient(135deg, #d0d0d0 0%, #b0b0b0 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.login-btn:active {
    transform: translateY(0);
}

/* Responsive Tasarım */
@media (max-width: 480px) {
    .login-box {
        padding: 30px 25px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    .logo {
        width: 70px;
        height: 70px;
    }
    
    input {
        padding: 12px 14px;
        font-size: 14px;
    }
    
    .login-btn {
        padding: 13px;
        font-size: 15px;
    }
}

@media (max-width: 360px) {
    .login-box {
        padding: 25px 20px;
    }
    
    h1 {
        font-size: 22px;
    }
    
    .subtitle {
        font-size: 13px;
    }
}